tpryor

I have put cat-back systems on all of my cars (even my wife's Volvo) for 20 years, and have NEVER had a warranty issue. The Borla (or any other system) will not affect the warranty coverage.

mikeb

dealer must prove that aftermarket exhaust is causing whatever the problem may be to void warranty

U. N. O.

so could we just do a straigth pipe with a couple of resonators to reduce the noise?

energie

Mr. Borla, are you really the guy that is responsible for Borla, the exhaust?

david borla

We have over 150 employees here at Borla performance. It's truly a team effort! However, it's not just a coincidence that my last name is Borla. I do have an ownership interest.

mikeb

Mr. Borla
I admire your humility

Omicron

Ok, so where does this leave us, from warranty standpoint? Mr Borla, can you elaborate?

rabinabo

I think it's pretty clear. Borla has a warranty on their product, since I'm certain Mazda won't guarantee a product that's not theirs. It is the law that Mazda has to honor their warranty on the rest of the car UNLESS they can prove that the aftermarket parts contributed to any damage. Now that doesn't prevent individual dealerships from being total jerks however. Then you could simply find a lawyer or another dealer. There are some mod-friendly dealerships out there. Some will even install the aftermarket parts for you.

That said, I think as long as you keep the cat, most dealers should still honor your warranty.

And UNO, you can definitely just get a straight pipe with resonators, but I think it would still be very loud. These mufflers are all straight-through design so they don't restrict all that much.

U. N. O.

thanks :D i hate it when i am ignored

david borla

As others have already stated, the dealer would have to prove that the aftermarket cat-back caused added stress to the engine or drivetrain. As we have dicussed, the opposite is the case so there's really no issue here regarding the factory warranty. As a matter of fact, there are many Maza dealers that sell the Borla exhaust for the RX8 as well as the Miata. Regarding Borla's warranty; All of our street products are warrantied up to one million miles. I believe that we have the most reputable warranty in the business. If warranty and customer service are a concern, you should really consider Borla exhaust.

Omicron

I've done more than just consider it, I *bought* a Borla system for my RX-8! :-)

Thanks for the answers...

Steve Pipitone

Hey guys that sound is awesome , it sounds real angry, really shows that the rotary can scream, if it wants too! I have a question though, why do the aftermarket exhausts pop all the time, can someone expalin it to me, and can it be avoided?



Thanks

Tamas

iTrader: (1)

That popping sounds to me like a backfire, and I think it was audible in the stock soundclip too... not very good. Maybe something is wrong with that 8?

Omicron

Based on my experience with RX-7 rotaries, I believe the popping/backfire sound is normal, and a function of the rotary engine's design.

RXhusker

I test drove a new Volvo S60R ($54,000 300HP Inline 5 engine AWD) and it also popped in the exhaust. Dealer proudly stated that he can even get a little flame/spark at times. I am no expert but I think it is just part of having a more free flowing exhaust that is more concerned with performance than quietness.

Steve Pipitone

I wouldn't really call that a backfire, I had a 1980 rx-7 for about 4 yrs , it was my first car and the start of my love for rotaries, but I can undoubtly say that that car used to back fire when cold , in fact my friends used to tease me about it, they said it sounded like a gun going off!! Anyway , Mr Borla can you please comment on why aftermarket exhuasts have that popping sound, Im very interested in knowing why.




Thanks...

Speed Racer

The stock exhaust also pops if you let up on the throttle quickly but because the exhaust is so quiet it doesn't really catch your attention. Where as the Borla exhaust is noticeable louder and so is the resulting pop. So I think the pop is inherent with the Renesis.

FYI - If you don't like the pop then just ease off a little slower on the throttle and it never happens.

Gyro

BTW...people are calling it a back fire. I could be wrong....but I always thought "backfire" was when (in carburated engines mostly) combustion occurred in the intake manifold. Causing that Whoooosh pop inder the hood. Scares the christ out of anyone near the engine bay.

nash

It is not backfiring, it's "burbling". This occurs when you lift off throttle. When the throttle body closes, you lose pressure in the exhaust, forming low pressure bubbles. These bubbles are what cause the burble when they "pop". An aftermarket exhaust that is freer-flowing than stock will accentuate this behavior. For even more burbling fun, remove the cat.

mikeb

congrats ryan on the mod

DrMike

Awesome posts to all. My 8 is only 2 days old and I am raring (or should that be rotoring?) to go for the Borla exhaust.

An open question to the folks who have converted to the Borla exhaust. Are you getting the same amount spluge residue as the stock pipes or has it decreased with the high flow exhaust?

rx7tt95

Dynojet offers corrected hp. What that essentially means is that two cars on either side of the country can jump on the same model dynojet and their numbers can be compared. Dynojets correct for altitude, temp and barometric pressure (anything else?). So theoretically, if the input parameters for the correction factor are not fudged, the numers are "precise" in relation to one and other. Meaning, if one car records 180hp and one records 190, the 190hp car really is stronger.

Things such as dyno maintenance come into play as does the operator. it is possible to fudge the numbers through correction factors.

CraziFuzzy

Dynojets correct their readings for differences in pressures and temperatures, but the engine itself will make more or less power at different altitudes and temperatures. Plus the fact that a rotary engine builds up deposits that actually affect it's powerband, so the way a car is broken in will actually affect the power curve of the engine (to an extent). The important thing in this situation is that this was the same car on the same dynojet, at near the same atmospheric conditions, so it is an accurate portrail of the HP gain offered by the only changing variable, the exhaust. Even though it may be a different absolute value, the relative change is what is important here.

RXhusker

Put on my Borla this evening :D The 8 has a little attitude now! As has been said -- it sounds a little deeper -- a little meaner. Just as I hoped it doesn't sound like a Civic fart can -- definitely sounds more mature and refined. At idle it rumbles a little more than stock --- during hard acceleration you can really hear the difference -- cruising at speed I really couldn't tell any difference from stock.

Installation -- this took me about 4 hours! Most of the time was spent trying to remove the dang rubber hangers - estimate 3 hours. I was going to just cut them off as tpryor suggested but I went to two auto parts stores and could only locate 1 replacement hanger! (Need 5 total) So I decided to remove them instead of cutting them off -- wow what a pain! I did end up cutting one off and using the one replacement I found -- not sure that was any easier -- the new hanger was so stiff I couldn't quite get it all the way on. If there is some secret to this -- I don't want to know at this point Everything else was as expected (except I broke another clip off of the exhaust cover plate -- broke one off when I put the exhaust finishers on). The spring bolts were actually the easiest part of the process. Well I managed to break a screwdriver and gash up my hands pretty good on those exhaust hangers -- still have one that I don't think is totally on right (the one closest to the spring bolts) -- just can't get it to stretch far enough.

Fired her up and went for a quick spin (1 am) -- sounds great and seems to rev a little more quickly. Didn't want to wake up all the neighbors so I will have to play with it more tomorrow.

bureau13

Are you guys using liquid soap on those rubber hangers? It makes them slide on and off much easier.

jds