Catback exhaust opinions?
 

Hey all, I'm trying to decide what exhaust to install on my FR-S. I'm leaning towards the Greddy Evo3 or the ISIS from Enjuku racing, but I may wait for the TRD system if either of these will affect my ability to pass smog. I wouldn't think so, but if there's anyone that has experience with this I'd appreciate input.

Also, will installing an aftermarket exhaust affect my warranty? If it will, I may just wait for the TRD exhaust to become available and have my dealership install it.

I really love how the Evo3 and the ISIS sound, though. :(

Thanks!

Kat

TRD is the least hassle way to go ..
I'm hoping Evo3 gets CARBd mostly bc Greddy is such a big company I can see them going through the trouble of getting it CARBd

Anything that has direct connection to the exhaust will void the warrnty of the part - but in all seriousness, not likely.
There is no reason that the exhaust will damage any part of the car including the engine - it gets better airflow than the stock. [they could claim that the "back pressure is too much that it pulls out too much air from the combustion chambers and messes with the air/fuel ratios" but that seems like a load of bs]
But if a dealer hates you for it, go to the next dealership for work. Some dealerships cares, others don't.
TRD exhaust will be 100% hassle/haggle free.

But I'm still waitin on the Greddy ;)

edit: deleted the random 'for' lol

I know! It sounds so good! I hope you're right and that Greddy sees the demand and CARBs it; that would make me very happy. TRD exhaust isn't bad sounding, but it's a bit quiet for my preference.

I'm personally not too interested in the noise produced, I'm sure I'd like them all you know?

I'm more interested in the design and layout - the Evo3 is straight and super clean looking Y back.
That's the design I'm looking for and Greddy finishing has got that name backin' them up!
Supposedly its their better ones for this car too.

Also considering how its a 2.75" it may be enough for a low boost turbo later on when I do boost too ~

I'm trying to keep myself from doing too much with this car besides exhaust and a few cosmetic mods; she's supposed to be my daily driver. I just want her to sound a bit more aggressive. Besides, I'm afraid if I start doing too much I'll end up with two cash sinks instead of one! I gotta save money for more parts for my FD. I want to be able to afford my 20B swap someday! :bellyroll:

haha i know what you mean.
good thing suby is pretty well known for good intakes - our exhaust piping is another story though ... so pretty much exactly all that's needed .. besides header and tune :P

you should post pictures of your two babies together!

http://i1056.photobucket.com/albums/...7/fec272e4.jpg

Here's a picture of my babies Saturday at the Central Valley Rotaries meet here in Hanford. Photo courtesy of Jadrien (thanks!), unofficial meet photographer.

Oh FD. I love thee so much.

I'm going to guess that the Greddy one is most likely to get a CARB certification if you're worried about smog. I believe for new vehicles though you don't need to worry about smogging it for 6 years then every 2 years after that. Also to deny you warranty they would need to prove the exhaust is the cause of the failure. Whatever that failure may be. Though in one case at the dealer I was working at, some field engineers found the customers aftermarket exhaust was the cause of constant light bulb failures believe it or not.


Love the FD BTW.

Yeah, I won't have to worry about smogging it for a few years. I guess I could always just keep my stock exhaust and swap it back on if a smog shop gives me a hard time; it's just a pain to do that. Same thing with the warranty; "Aftermarket parts? What aftermarket parts?"

I've heard the smog check will be simplified starting Jan 2013. No more emissions tests, just a visual and OBDII check - if you don't have any engine codes, pass. So I don't think any exhaust that retains the cat will have a problem. Cat back = after the cat, so should be fine.

http://www.i-club.com/forums/bay-are...adings-241314/

If this is for real, definitely going for ISIS or Evo3.

The cat back part, yes. The smog part changing...I doubt it. But maybe this will pertain to newer cars. There are just too many older cars that would still need to have the stick in the pipe reading. Also they still have too many issues with people skirting the smog process. If anything it will get tougher.

if you read the story the simplified smog is for cars 2000 and newer. older cars still have to do the full tailpipe emissions test.

After reading that article I have a few concerns.

1.) The story doesn't have a V.C. number. AB stands for Assembly Bill meaning that its not part of the vehicle code yet.

2.) Specific range for our vehicles. Is the FRS/BRZ classified as a LEV, ULEV? What affects do the current intakes have on the AFR of the car and does this move it close to or out of the acceptable range for our car. I know that on my S14 with injen intake/tanabe exhaust the AFR was almost always on the edge of the allowable amount.

yeah, I'm no legislator, but from what I can tell it passed in both House and Assembly, and was approved by the Governor (Governator) in 2010. Not sure what else needs to happen before it goes into effect...
http://totalcapitol.com/?bill_id=200920100AB2289

the takeaway for me is, as long as your ECU isn't throwing codes you will likely pass. Several of my cars have catback exhausts and the smog check guy never looked twice at them, all he cared about was visual under the hood, gas cap passes the pressure test, and the emissions part on the roller/dyno (which will go away). Net effect is I think it will be easier to pass smog for most of us. If you have removed cat or have non-CARB intake yeah you will probably have to swap it back to pass, but that hasn't changed.

The catback should be enough to swap back to stock for emissions testing, no? It shouldn't affect your warranty at all.

I personally picked the SRT headerback (or catback in your case) because I love how clean it looks.

I guess the original point of this thread is now void, because (to my surprise) when I got out of the shower this evening there was a brand new ISIS exhaust sitting on my front porch. Early birthday present, I guess!

haha congrats, enjoy ~

lol Very nice! Share some pictures and videos of it after you get it installed!

I've been waiting on the Evo 3 myself.

Got to meet up with Ms. FRS this weekend in Vegas and that ISIS exhaust sounds SIIIIICK!

How loud is it in person? Is it deep (not farting noise?). Was the uneven burnt tips fixed?


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interested in this as well ^^^

glad to see another rotary enthusiast on this site! 20b will be the best thing you've ever done to your FD! and have a sound unmatched by any other!

Catback exhausts don't get CARB'd

were those catbacks .. i personally want the entire exhuast n headers replaced .. :X

Only headers would need the CARB. Exhausts only needs to meet the sound limit.

the japanese trd exhaust or the amuse exhaust is what im going for unless there is a better sounding/performing one that comes out.

Nevermind. Changed to perrin. Now saving

we just swapped out our stock exhaust and went for a Borla! http://www.ft86club.com/forums/showthread.php?p=455393

Two of my top 5 favorite cars. Can't go wrong with that. I think The RX7's design has aged incredibly well.

I know this thread is kind of old, but to be clear...nothing post-cat has any effect on emissions. Just sound.

got my AP catback need to get it installed !