Online Mazda Parts

Bosal/Brospeed

Bosal/Brospeed Cat-back

[3/3/2006] Reviewed by: Ryan Berg - TheMazKid@yahoo.com

Applicable to: '90 - '97 1.6 liter 1.8 liter

Bosal/Brospeed cat-back(mid-pipe, muffler, exhaust tip) 2 piece system.

I bought this product used. Even so, I will say this is probably THE CAT-BACK to buy if you need to replace your OEM exhaust. It's as quiet as stock with a deep, pure-er sound. Power? I don't know. Probably a little free-er flowing than stock. I'm also using a Jackson Racing high-flow converter but a stock header. Overall I'm very pleased! The hardest part of the install is the uninstallation of the stock cat-back, especially on Miatas like my '94 which have the suspension cross-brace at the back, making it impossible to remove the stock 1 piece cat-back. I had to use my trusty pipe cutter to cut the section in 2 to remove it from the car. Not hard at all. Took very little time. Great product if you are looking to keep a low decible level!

Under 30 minutes to remove completely


Bosal/Brospeed single outlet cat-back exhaust

[9/9/2004] Reviewed by: Dave Dawson - david_l_dawson@yahoo.com

Applicable to: '90 - '97

Bosal/Brospeed cat-back single outlet exhaust.

Excellent. Would recommend to anyone who wants a nice sound but does not want everyone within several blocks to know they are around.

Initially installed an Ansa muffler/exhaust on my 92. After a few years the Ansa was so loud it was uncomfortable to cruise any distance. Recently installed the Bosal/Brospeed cat-back single exaust system. Still has a nice growl under acceleration, but the loud drone at speed is gone. Others have indicated that they thought the Bosal was quieter than stock. I disagree. It is not, however, going to make you deaf in a couple months like many of the after market exhaust systems out there. So far, I am entirely pleased with the system.

Under 30 minutes to remove completely


Bosal aftermarket cat-back exhaust

[8/18/2004] Reviewed by: Ross Thoms - Rlss.Thoms@comcast.net

Applicable to: '90 - '97

Bosal aftermarket cat-back exhaust

I purchased this exhaust as an inexpensive replacement for my daughter's 1991 Miata. Fit was good, but discovered an excessive exhaust leak at the muffler weep hole. It was late at night with no chance to get another unit, I mig welded the weep hole. Called manufacturer and was advised to sign up for extended warranty. It will probably last a few years, but I was hoping for a better response from Bosal.

Under 30 minutes to remove completely


Brospeed/Bosal catback exhaust system

[8/1/2003] Reviewed by: David O'Steen - miatattitude@hotmail.com

Applicable to: '90 - '97 1.6 liter

Brospeed/Bosal catback exhaust system

If you want to sound like a ricer honda wannabe, this is NOT the product for you. This is however, a very nice roadster sounding exhaust! Install was very easy as I had the good fortune of not breaking my catalytic coverter studs off. They were in very good condition. When I first put it on, I thought I'd made a mistake. It was QUIETER than my stock burned out muffler(without the rattle!). But once it got warmed up(burned in?) the sound improved to a very low growl when accelerating and just a low burble at idle. Very stock like sound. And as I loved the way my car sounded before, this exhaust is awesome. The welds, fit and finish are top shelf! As for performance, I can't really say. But I'm not looking to drag race any hondas anyway! =-)

Under 30 minutes to remove completely


Brospeed/Bosal catback exhaust system

[12/21/2002] Reviewed by: Andrew Clark - drewid@rcn.com

Applicable to: '90 - '97 1.8 liter

Stainless Steel Catback.

BroSpeed cat back. Stainless steel 2 ½ inch cat back that bolts right in, looks great and doesn’t make this grumpy old man deaf. Quality welds and a flange that line right up, this unit came with gasket and hardware to install. I installed this cat back with a 2 ½ inch stainless catalytic converter about six months ago and my gas mileage has dropped since then. My car pulls quickly to redline and the state troopers are not as amused as I am. I recommend anyone installing this or any cat back to purchase new exhaust hangers to replace the old ones when installing the cat back as I was laying on the ground today admiring my shiny exhaust while replacing the hangers because at about 15 Deg F my worn stretched out hangers let the over sized exhaust tip bang against stuff. New hangers no noise read Flying Miata’s tips on installing exhaust systems.

Would buy again in a heartbeat.

Difficult to remove without leaving damage


[3/23/2002] Reviewed by: Tom Lin - linthomas1@hotmail.com

Applicable to: '90 - '97 1.8 liter

Stainless steel exhaust system. Very good quality exhaust system which cost less than JR exhaust or Borla. Extreme quiet, it's like getting performance exhaust without any extra noise. Now I could listen to myself, other, and radio/CD without blasting my radio to 80% loudness.

I had Borla and JR exhaust previously to this one. I had Borla first, I liked it but after adding JR header and JR cat conv, it got extreme loud. So replaced with JR exhaust. Afterward, I got JRSC and JR exhaust was just too loud, so I replaced it with this exhaust. After hearing from Tommy from finish line product and other people on Miata.net forum, I decided to get this exhaust. My experience so far has been extremely happy. JR Exhaust also had problem with fitting right under the car so every turn I made, it made some metal/metal sound.

I strongly recommend this exhaust for people who want to get performance gain without getting loud annoying exhausts. Also craftmanship of this exhaust is excellent. One thing to mention is that when I called Finish Line, they said they have everlasting backorder from Bosal/Brospeed to get OS2 sensor plug ready one. So I have to have it altered by Seth, Dealer's Alternative in West Orange, NJ. Which he did really nice job. Overall, I am extremely happy customer. At first I was not sure I wanted to buy less known brand, but since I have it installed I have never looked back.

Under 30 minutes to remove completely


[10/23/2001] Reviewed by: Jim - cliffsvic@home.com

Applicable to: '90 - '97 1.6 liter 1.8 liter

Cat back exhaust system for 1.8L M1. 300 series stainless steel pipes and muffler with styled chrome outlet.

Perfect fit, high quality construction and very quiet. Full accel has a healthy growl and idle has a little lower tone but cruise with top up or down is very pleasant. No mid range resonance that other systems have (from reading various review and forum threads).

Under 30 minutes to remove completely


[7/25/2001] Reviewed by: John Engelson - engelson@gte.net

Applicable to: '90 - '97 1.6 liter

Stainless Steel Catback Exhaust

Very Pleased. Quiet

During installation I broke off one of the studs on the catalytic converter. The Brospeed package included bolts and nuts for attaching to the cat converter so I just drilled out the hole and used one of the bolts.

Over 30 minutes to remove completely


[5/16/2001] Reviewed by: Mike Shepherd - mshepherd@deandortonford.com

Applicable to: '90 - '97 1.6 liter 1.8 liter

This is a stainless cat-back exhaust with resonator.

This is a solidly constructed product that looks and sounds great. I have a JRSC, JR Header & JR high flow cat. I used this exhaust to replace my Borla which was just too loud for me with my current set-up. I know....first sign I am getting old.

I can't be more pleased with this exhaust. It is very quiet, even more quiet than my Borla was when I was NA with a stock header & cat. It has a nice mellow sound to it. This is a GREAT solution for any of you with highly modified systems that like things a bit more quiet.

Under 30 minutes to remove completely


[12/27/2000] Reviewed by: eunos roadster - eunos_roadster@miatadriver.com

Applicable to: '90 - '97 1.6 liter 1.8 liter

This is a replacement cat-back exhaust system, it is made of high quality materials.

Brospeed makes the best exhaust for the money, it makes good horse power and is really quiet.

if your stock exhaust is worn out, replace it with a Brospeed, and your looking for something quiet, this is the one for you, it is as quiet or slightly more quite than stock, available through your friends at www.rspeed.net

Under 30 minutes to remove completely


[4/22/2000] Reviewed by Frank Tombrello aka Chameleon aka Bernie - ftomb@altavista.com

Applicable to '90 - '97 1.6 liter

catback exhaust system

Bought at Rspeed after my OEM exhaust gave up after 92,000 miles. Installed by Joe@Rspeed.

When I found out I needed a new exhaust I told Joe I wanted a "hangover special." Something I could drive the morning after drinking heavily that wouldn't make me want to trade my car in. Joe called it his "wife pleaser" due to the nice mellow sound, so I went with it. A few minutes later and my Miata was a new animal. I can actually drive with the top up (when raining of course) and not have to crank my stereo all the way up. The exhaust note is very mellow when at idle, but can be heard when under WOT. I hate tinny exhausts and this one definately is not that once warmed up. Not only does it make my Miata sound better, but I believe that after 3500 rpm my car now revs quicker. Great exhaust for the money, great sound, and the tip isnt the size of a beer keg like other exhaust systems.

Under 30 minutes to remove completely


[11/14/99] Reviewed by: Dennis Nicholls - danicholls@counsellor.com

Applicable to: '90 - '97 1.6 liter 1.8 liter

Catalytic Converter Back "catback" exhaust system, including separate midpipe with resonator chamber and rear muffler section with polished 3.5" tip. Unit is all stainless. Midpipe and rear muffler attach at a pair of flanges connected with bolts and gasket. Fits 1.6L and early 1.8L cars.

I was going to install it on a Saturday. Friday night after dinner I jacked up my car to oil the cat nuts, but found they came right off. So I went ahead and installed the exhaust. I took the bracket for the frontmost rubber hanger off the car (2 bolts) and pried several of the remaining rubber hangers off using the Grainger screwdriver method. The difficult ones I just cut off - I had bought 5 new rubber hangers ($5 each from Finish Line). I installed the rear muffler first. I put it on a box to take the weight off my arms, attached the driver side rubber hanger, and then the front passenger side rubber hanger. I then rolled the muffler up and connected the final hangar. Next came the midpipe. I mounted the new hanger and bracket at the front, slipped it onto the cat studs, and loosely put on the bolts at the midpipe/rear muffler flanges. I then tightened the nuts and was finished.

A very well made unit, made in South Africa. It uses 2" OD tubing like stock, and the overall weight is 21 lbs, again like stock. The tubes going into the muffler don't line up so this isn't a straight-through muffler. It's a little louder than stock and much deeper. There isn't as much raspyness now. My only complaint is that I believe the cat gasket supplied with the exhaust has too small a hole - the OEM one has a 2 and 3/8 " hole, the new one is noticeably smaller. I am going to buy an OEM gasket. This kind of exhaust, connected with bolts and flanges, is so much easier than the slip-joint and clamp exhaust which I worked with on other cars. I did the whole job in about 30 minutes without getting dirty or swearing.

See www.bosal.com  . Bosal is the parent company and Brospeed is the product line. Vendors use both names interchangeably. Brospeed makes non-stainless exhausts for Hondas and the like, and there have been complaints that these rust out too soon.

Over 30 minutes to remove completely


Back to Product Reviews 11 November, 2006


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