Applicable to: '90 - '97 1.8 liter
Intake crosspipe with large foam filter and heatshield.
Very easy to install. I was amazed at how inefficient the factory ('97 1.8) design is compared to this one. It's a very obvious modification once you get the factory coolbox and crosspipe pulled off, which is a simple process. The filter is very large, I was suprised when I took it out of the box, but the fit is fine and all the adjustments are easily done. Installation instructions are adequate enough for a guy with little mechanical experience (just exhaust, short throw shifter, and shock tower brace on my own so far.) The heatshield is a must. After only 10 minutes of driving you can feel the feel the heat on the back of it. I'm considering TSI's just to make it that much cooler. My application is coupled with a Borla single catback exhaust. I'm amazed at the throaty growl it produces above 3k rpm! Under acceleration it doesn't even sound like a 4-cylinder anymore. There's a noticeable increase in power, and the engine feels more free to rev. I'm very happy with my purchase.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Monster Flow intake kit for 94-97 Miata includes new crossover pipe, cone-style air filter, bracket, hardware, couplers, and instructions. Nothing flashy or special; just the way I wanted it. Replaces the entire restrictive and heavy OEM intake. Instructions are good and product was quick and easy to install. I had no fitment issues with the hood, but the crossover tube just barely touches the top radiator hose.
A hissing noise can be heard while the engine is idling and more intake noise is noticeable during engine shut down. Since I have a loud exhaust, I do not notice any additional intake noise while driving. I did, however, immediately notice increased throttle response and faster revving engine, especially between 5-7K rpm. My butt dyno says it feels more powerful. CARB legal also, which is great for us California drivers.
The filter media is foam, and a cleaning and re-oiling kit will need to be purchased also.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Aftermarket Intake
The intake was easy to install and the instructions were more than adequate. I did not purchase the heat shield (I'm using TSI and this cools the air around the filter) as I was assured that it would fit with my factory cruise, albeit a tight fit. A tight fit it was. I removed two of the three bolts holing the cruise actuater in place and moved it as close to the fender and toward the headlight as possible and tightened down the bolt closest to the fender. Suprisingly it still seems stable. The filter is a very tight fit , and will rub one small part of the cruise actuater and the very end. I will keep an eye on it, but, I don't think it will be an issue. I needed to bend the support that came with the intake slightly to keep the filter well below the hood when closed. This was easy and the support is stout even after slightly bending it to meet my needs. It is very important to only hand tighten all the clamps. This is especially important with the connections ! at each side of the Air Flow Sensor. I actually broke a small piece on the filter side of my sensor, but, I was lucky as it was just about a 6cm by 2/3 mm piece and still holds the rubber connector hose (filter side). To be sure I removed the rubber seal that sealed the stock housing to the sensor which gave me another inch and a half for the hose to seat. This seal plays no roll in the Monster flow assembly. Again, just take the advice about not tighting down the clamps. I didn't think I did and it still cracked. The sensor runs $470.00 new and $200.00 refirbished, so, don't make the mistake I almost made by breaking it off. All in all the installation went very smothly and I luckily avoided a costly mistake.
My initial observations is a quicker throttle response and you call tell there is a reduction in air restriction. You can feel that it is breathing easier. Quicker to the high RPMs. Worth the investment. The guys at Goodwin Racing are terrific.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
"high-flow" rotomolded intake with foam filter.
Update to my 7/25/2004 review (see below):
Yesterday (5/9/06) I put the Monsterflow filter back on the Good-Win intake, after running a paper Purolator on the Good-Win since the new engine ('94 crate motor). The new engine always seemed a bit sluggish, including a dip between 3 & 4K rpm, despite bumping the timingto 14deg BTDC. I expected nothing but sound, but instead got elimination of the 3-4k rpm dip, with no significant increase in sound. I was pleasantly surprised.
On the original '97 engine (slightly higher compression than '94), I don't recall any difference when I changed from the MF to the Purolator, maybe a little high-end loss.
My previous comments about fitment still apply.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
MonsterFlow Intake distributed through Good Win Racing
Had this on for about a week. There is a power increase. I don't know if my butt dyno sees a 10hp increase as stated for my year. Not much noise difference from stock up to 1/3 throttle. Between 1/3 to 2/3 throttle, there is an amazing growl from under the hood. Above 2/3 throttle, it is just plain loud. Has definitely increased my driving enjoyment. Happy with my purchase.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Good-Win's Carbon Fiber MonsterFlow Intake and Black Anodized Coolbox
The installation of the intake and coolbox were very easy, and complete within 75 minutes. The only problem was figuring out the subtle nuances with the final mating of the filter to the airflow meter. With the CoolBox installed, you need to mate the filter to the airflox meter before connecting the airflow meter to the intake.
Brian is always so great to work with and I appreciate the ease of ordering and speed of delivery. The system went together really easy with very few problems. I love the throttle reponse, but could do with a little less sound as it drowns out my Roadster Sport muffler, which is near and dear to my ears.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Goodwin Racing Monsterflow Polished Aluminum Intake
Positive.
Installation instructions were straight-forward, but a more detailed (or close-up) picture would’ve been helpful. Perhaps because I did not purchase/install the cool box, the air intake is not a perfect fit; by installing the bracket – to secure the MonsterFlow filter to the car body – the filter is lowered just enough to slightly affect the geometry of the air flow meter to filter connection. The bracket is not required with the cool box. I don’t like the fact that the filter end of the cross tube is slightly lower than the throttle body end – but no big deal. Nevertheless, I’m satisfied with the results: Improved throttle response and sound, with the added benefits of additional under-the-hood space and weight savings. A couple of days later I added a JR Header. A terrific combination - the results of the Air Intake alone are multiplied! Shipping was prompt and customer service outstanding. The MonsterFlow Air Intake is a definite upgrade!
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Goodwin Racing Monsterflow Polished Aluminum Intake and Isolator CoolBox
RSpeed installed the intake and coolbox for me on separate visits. The intake was installed first on my 2001 LS. I could "feel" a small difference in power and a big difference in sound and throttle response. On my next visit to RSpeed, the coolbox was installed. I could feel an improvement in power and throttle response with the addition of the coolbox. I drove the car for about 2-3 weeks without the coolbox (this car is my daily driver). I also noticed a change in the sound from under the hood (slightly muted with the coolbox).
Overall the car is more fun to drive. I enjoy the throttle response and sportier sound.
Over 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
High flow intake tube & foam filter
Had some difficulty installing on my red '97, as there was zero clearance beween the tube and the radiator hose. I trimmed the rubber coupling on the TB end, notching it to clear the lump for the idle bypass, to move the tube a bit aft. Also needed to remove some flashing. No problem clearing the cruise control, a that had disappeared a long time ago, when I installed a used RB elbow. When I moved the GWR intake to my new black '97, there was negative clearance with the rad hse, and I trimmed the coupling more, and the rnd of the tub as well. Difficult to avoid rubbing the hood as well.
Looks like the unit was designed for the '99 & later, then the bung for the '94-97 idle bypass was added. Unfortunately, this puts it too far forward, causing interference with the rad hose, and thus requiring a frustrating field modification. The heat shield is nowhere as effective as that for the '99+, which is a true cold air box. Nice sound, difficult to tell if any power increase. No, I would not buy another.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Monster Flow Intake system w/ foam filter and aluminum heat shield
Great Buy. Overall a pretty easy installation. I recomend if you have cruise control to buy the Racing Beat cruise control relocation bracket as well, otherwise you'll find goodwin's instructions aren't to detailed on how to relocate your cruise control without it. I love the WOT sound definitly alittle more torque in the low end and a noticable difference in the high rpm range. This is my first performance modification and found it to be rather good for the money spent. Make sure when your tightening the clamps on the hoses not to crank down on them. Unless your running some serious turbo system there's no reason for the clamps to be anymore than hand tight. The only bad thing I can say is I wish they made the stainless pipe for the NA miatas as well.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Goodwin Cold Air Monsterflow Stainless Steel Intake with Polished Heat Sheild
I have a 2001 LS with strut bar. Installation is a breeze. Nice polished intake. This intake is FUN. Most noticeable improvement is in sound. No more buzzy weazy sounds between 3000rpm - 5000rpm. Especially in 3rd gear and higher at WOT. Very nich deep throaty "brrrr" at WOT up to about 5500rpm then the buzzy weaziness comes back. Gotta get the FM duals next..
Acceleration increase slighty noticeable (particulary in 5th gear over 70mph) but throttle response is significantly smoother. Overall highly recommended makes the car much more fun to drive when you mash on the gas. If you drive conservitely you will barely notice any difference from stock. Next buy will be the FM duals.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Rotomolded plastic cross tube, foam filter element, aluminum heat shield
Installed for about 8 months. Installation is very easy, however, the included bracket doesn't seem to be of much use. The heat shield doesn't hold the cross tube like on a M2, but it does block radiant heat from the header. In my application, I wrapped a zip-tie around the cross tube and that chrome breather that sits in front of the valve cover to hold the intake in place. Seems to work well enough.
Great sound! No dyno before or after, so I can't say about power increase. Subjectively, the motor seems to breath better between 4200 - 5700. Just did my first filter cleaning, using a foam filter cleaning and oiling kit named UNI that I picked up at a motorbike shop for $11. First cleaning since the SD fires and it helped open the intake up again. It is such a nice roar. Great old school bolt-on, cheap, simple and effective.
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Polished Aluminum monsterflow intake with cool box
Installation took longer than for most. It has been a while since I did any type of work on a car and while wearing a neck brace to boot! The instructions were fairly clear. When I got to a place where I wasn't sure I called Brian at Good-win and he put me back on track. I too have noticed the closeness of the wires to the cool box but Brian tells me that there would be no problem with the wires being cut. Not sure about increase in HP, but the sound at 4000 rpm is totally awesome. Throttle response it excellent, but it was pretty excellent before. Will be putting on the RoadsterSport II exhaust this weekend. Can't wait to see what the combination does to an already excellent roadster.
I poured over the internet trying to decide which intake to buy. I decided on the Monsterflow mainly because I did not have to re-route the wiring for the cruise control and did not have to buy a bracket for the shock tower. Everything I needed was in the box and I only needed a metric socket set, a flat head screwdriver, and a Phillips screwdriver. Quality is excellent, sound is great and the support from Brian at Good-win makes it a great product to buy. Totally recommended.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Aluminum crossover Monster Flow intake from Goodwin Racing
I ordered this intake because I was looking for a slight increase in acceleration and a sportier sound. When you rev the car over 4K you can feel a slightly stronger pull than stock with this intake though nothing that will blow you away. The main selling point for the intake would have to be the sound and the under the hood appearance. I usually hold my car around 3500 RPM's when around town and when I step on it now the intake makes a great guttural sound that sounds like a much more powerful car. I also have a Flying Miata normally aspirated dual exhaust so the car is quite loud under heavy acceleration. I would recommend anyone looking for a sporty sound (not ricey) to try this configuration. It is definitely noticeable at all times though and is suitable only for those who want some attention.
Installation was a snap, the only modification I did was to add some washers under the mounting bracket so that the intake would sit flatter. I do not have the Cold AirBox so I used the included mounting bracket and one of the factory tapped holes in the frame.
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Goodwin Racing Monster Flow Polished Aluminum Intake (without CoolBox)
Totally great... I am a novice at this stuff, but by going slowly and carefully I was able to install this myself (with some help from a friend, holding things, etc.) and it came out real nice! The fit and finish is excellent, and I'm really happy with the result. It looks great, sounds great, and it's better for the car!
I opted to go without the coolbox, and I have no regrets. This was just enough for me. One thing is for sure though, this intake is awesome. The fit, while tight, is comfortable. The directions, in just a couple spots, could have been a little more clear (hey I'm kinda new at this technical stuff) but all in all they were easy to follow, and by going one step at a time it was easy. I've had intakes before, and seen how they are put in, but I've just never done it myself. It was a great experience. Also, the shipping from their website was very prompt, and the guy over there is very helpful when asked questions. I highly reccommend this product!
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Monster Flow: Carbon Fiber Intake system with Cool Box on a '02 SE.
Very impressed with the product. The instructions were perfect, installation went very quickly and the fit was excellent. Since my hi-freq hearing is shot, I can't hear any hiss at idle, but boy you can hear that sucker at full throttle over 4K. Yes!!!! Response is great, power definitely picked up. (Actual numbers coming from the dyno next week) I'm also running Jackson headers and a Borla muffler.
My buddy and I made a couple of mods when installing:1. We drilled two holes for the wiring harness plugs to connect to; 2. the Front/leading edge of the Cool Box had a sharp edge up against the headlight wiring and we cut length of hose and split it to cover the edge. 3. We cut a very short length of water heater hose (3"), split it and fit it on the underside of the hole for the MAF in the Cool Box. This raised the fileter so it wasn't banging on the fender well and sealed the hole off better. Overall, a very good choice. 27+ MPG from Tucson to Phoenix today, 80-90 mph, AC on all the way in temps of 108+F.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Cold Air Intake
Excellent quality, directions were pretty clear
Totally read the instructions before starting. I removed the stock system and installed the MonsterFlow in under an hour. Now for the good part...it sounds great. If you aren't aggressive with the throttle, it sounds no different than stock, but if you floor it...it makes the sweetest sound, kind of like a V8 with a four barrel sounds if you take off the air cleaner. I'm awaiting a Speeder 2 exhaust system which I bought as a package with the MonsterFlow. The intake system was in stock and the Speeder 2 was going to take 10 days to build, so I had Chad ship the intake early. I'm glad I did it that way now as I can get an idea how each part helps. I want to mention how helpful and friendly Chad at Enthusa is. You can contact him at (770) 928-2899. His web address is www.enthuzacar.com
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Intake system
Product was received in good condition. Instructions were very clear and quite easy to understand. Total installation was about 3 hours, but 1 hour of that was me spray painting the plastic filter holder to match my other stuff. This install was on a new 2003. The overall fit was good, personally, I would like the hose connection at the throttle body to have more of a molded bend in it ( about 15 degrees) but it does work OK. Did have to split some silicon hose and install on the forward edge of the cool box. The wires that go to the headlight area are quite close, almost too close, to the box, afraid of shorting a wire on the box edge, but the small strip should protect the wires just fine. The MAF fit fine as did the temp. sensor. I did make sure that the polished aluminum intake tube was clean of any debris before installing, ie. dirt, metal shavings. The finished look is great.
As for the end result...many smiles! The throttle response appears quicker, revs higher faster and the WOT sound is awesome! Also have the Roadster Sport II exhaust with this system. Punch it and they will wonder what is under the hood.
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Monsterflow Filter & Polished Aluminium Intake System
I was a little anxious about spending soooo much money on a product that I had no experience of. I'm pleased to say that my worry was unfounded. The Polished aluminium looks great and is of good quality. All fittings were included and the installation was easy. The sound under acceleration is amazing, and easily worth the money on it's own. Sound is almost stock when cruising, so no upsets with the neighbours. Throttle response is improved, although engine braking is reduced a little. Well worth the money to release the latent sportscar from your 2001 onwards model. BTW, did I tell you it sounds great when you put your foot down?
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Goodwin Monsterflow: Carbon Fiber w/Kool Air Box
Great instructions-Simple installation. Rubber connection to throttle body seemed large, but Brian assured it would shrink over time.
Great WOT sound w/Roadster Sport exhaust. Would recommend you get one. CHUCK
Not an installed item
Applicable to: '90 - '97
Carbon fiber cross tube and MonsterFlow filter.
I cut down the two little tubes inside the carbon fiber tube and built up a "ramp" with silicone rubber all the way around each little tube to smooth the flow of air and to minimize turbulence. Don't know if it helped but it certainly looked better. I noted a rattle when the clutch was just starting to engage. Appaarently, the carbon fiber was vibrating against part of the hood frame and wore out the paint in a small area. Slight readjustment of the carbon fiber tube down, away from the hood and a small piece of foam tape on the bare spot on the hood, solved the only minor problem I've encountered.
I installed intake about 5K miles ago and did not feel much difference. In fact, the engine felt a bit "rougher" even though I thought it was stronger. Just to be certain, I reinstalled the stock system (complete with a Randall cowl system) and have driven it for about 500 miles. The Goodwin tube/MosterFlow is back in the car now because I can definitely feel the power difference at all RPMs. I seldom get over 5k RPMs but this system definitely increases power and the engine revs more freely. After driving with the Goodwin system, the stock system felt like the accelerator was connected to the pedal with a rubberband! Engine responsiveness cannot be compared. The "roughness" I felt with the initial install was simply my uneducated right foot which could not make adjustments finely enough for smooth operation. DEFINITELY recommended. For lightness freaks, this entire system weighs about half of the stock one: two lbs. instead of four.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Rotationally moulded tube with Monsterflow air filter without aluminium heatshield
Performance is definitely improved with better throttle response and improved power. I was a little cynical about the dyno graphs on the website but having experienced it I would say they are about right. The sound at WOT is awesome. It almost makes me want to drive around at full throttle all the time! My car (1993 1.8 S-Special Eunos Roadster) came with a factory fitted tower brace and after e-mailing Brian to check if it would fit was informed that it should be OK but he did think the heatshield would cause a problem. Having fitted it I can now see why. The space available for the air filter is tight. At one point I did not think it was going to fit. I disassembled the kit and built it up from the filter backwards (rather than the throttle body forwards as stated by the instructions) and with a bit of adjustment managed to get it to fit. I also had to shorten the tube from the crankcase cover as I was not happy with the tube kinking to get i! t to fit to the new cross tube.
I am very impressed with this product and the service and would certainly recommend this to anyone owning a MK1 1.8.
Under 30 minutes to remove completely
Applicable to: '90 - '97 1.8 liter
Carbon fiber tube with Monster Flow air filter and aluminum heat shield
Performance: Definitely worth the effort. Noticeably better throttle response and increased power. The roar at WOT is great too. Installation: The M1 design needs some work. The tube shape is not quite right. Pushing the end into position to fit the bracket puts it in a bind. The flexible joint wants to pull off the manifold. The clamp will hold it, but it's under stress. I'll see how the joints hold up. I don't expect the carbon fiber tube to crack. The hose fittings are epoxied into holes in the tube. The position is a little off. The hoses are in a bind. I'm concerned the epoxy may crack. The idle fitting OD is less than the hose ID. When I crank on the clamp it wrinkles and leaves a gap. I used Permatex to seal it. Brian said he hasn't had these problems. He promised to replace my tube if I have trouble. I'll keep an eye on it and see what happens. The rotomolded version may be better. It looks better shaped. I think the hose fittings are integral parts of the molding.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Carbon fiber intake with Cool Box Combo.
I had some questions regarding the fact that the rubber coupler was too large to fit my throttle body but was informed by Brian that it would compress evenly when tightening the hose clamp. It did. A clip angle to support the air filter is supplied but is not supposed to be used with the Cool Box. This causes the filter and intake tube to move around a lot, which to me, doesn't seem right. The front edge of the vertical wall of the Cool Box is sharp and has a slight interference with with a wiring harness which may cause damage to the harness in the future. Also, there are no holes in the walls of the Cool Box to re-mount the temperature sensor wiring harness support clips. No air filter information was included with my order though the installation directions indicated that it should be.
Throttle response seems improved and full throttle intake sound is vastly increased. Considering the price of the Combo, I expected better design quality in this product, primarily in the Cool Box, but so far, it works ok.
Under 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Monster Flow Polished Aluminum Intake with Stainless Steel Cold Box.
The product came in great condition with step by step intructions that where easily followed. Basic install was no more than one hour. It took me two hours after adding two personnel changes. Quality and performance match the advertising with this particular product. I've been involved in the metal fabrication business for 31 years and this product is worth the all the hype!!
This product was installed on a 2001 and has improved the throttle response. The howel under the hood is deep and only present upon drivers request. Everything changes around the 4-7 range and you will appreciate every penny you spent. Upon heavy acceleration only, it makes the Miata you bought sound race track ready. Drive it normally and you hear nothing different...just as advertised. Buckle up and drive safely!
Over 30 minutes to remove completely
Carbon Fiber Intake with hi-flow filter and a cool air box.
Easy to install, and the carbon fiber looks great. Improved throttle response and sound.
Recommended upgrade.
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Aluminun or Carbon Fiber air tube with a MonsterFlow air clearner.
This intake system is awesome. A solid 6 horsepower increase. Increased power felt in the upper rpm range (4k-fuel cutoff). And the sound is a great, really adds muscle to the Miata.
This intake is very easy to install. Comes with everything you need. Air tube comes in RED, BLUE, or PLOISHED ALUMINUM, and CARBON FIBER. You will not regret buying this intake.
Under 30 minutes to remove completely
Applicable to: '99 +
Cold air intake with cold box
Simple install. Way cool appearance.
Great sound, increased throttle response. Relocation of cruise control was most difficult part but still easy. Brian gives great customer service also.
Over 30 minutes to remove completely
Applicable to: '99 + 1.8 liter
Air intake system and filter with cold air box.
This is an excellent product. Very easy to install. Cleans up the engine compartment.
I bought my Monster Flow from GOOD-WIN Racing here in San Diego. The product was in perfect condition when I received it and the instructions were straightforward. No problems with the installation. The end result is amazing. The throttle response is out of this world. Reaching the redline is no longer an issue because the throttle response is so quick. How do you make a Miata more fun to drive? Call Brain at GOOD-WIN Racing and get one these jewels and find out!
Under 30 minutes to remove completely
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25 November, 2007 |
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