I want to know what my options are for a stock lookin' and quiet as possible exhaust for my GSR.... Last thing I need is a loud exhaust gettin thieve's attention... I wanna keep my Lookin' as stock as possible...

 

I ran an Apex'i RS and it was almost as quiet as stock, unless you hammered it, then it gave off a nice growl. By NO means loud though. About as quiet as you can get really.

 

i know what you mean man! keep it looking stock best way to keep freakin theives away! dont know of any quiet exhausts GL

 

I'm going to get the Apexi WS 2, which is basically the newer ( as well as cat-back) version of the Apexi RS as mentioned above. Probably the best exhausts for minimal noise and stock looks are the Type R stock exhaust or RSR exmag:

 

comptech

 

type r

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BANGBANG &raquo;</TD></TR><TR><TD CLASS="quote">type r </TD></TR></TABLE>

totaly forget about that. Go with a type R exhaust or if u got the cash mugen twinloop

 

Forget about what? Why would a Mugen or ITR exhaust be ideal?

I would think the Mugen has to be the worst design for power production on a boosted car.

 

My 2 cents:

For a JRSC GSR or turbo, I would suggest that the piping be larger. The RSR, Apexi WS, Greddy SP2 and Tanabe Hyper Medallion are all quite decent, but I don't think the piping is large and the mufflers are chambered.

I think the greddy EVO is the best bolt-on exhaust as the piping gets larger and helps reduce backpressure.

But, I would highly suggest straight 2.5 inch piping, 3" is not necessary unless you are running a mondo turbo.

I would go with the T1R system which is 2.5 " and is supposed to be quiet.

DIY route - You can buy 2.5 inch piping from kteller and do a nice 2.5" magnaflow muffler as well to keep the noise levels down. If OBD1 (else convert to OBD1 ) - instead of a cat, substiute another straight thru muffler or resonator in its spot to help keep levels down.

Hope this helps!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by newgsrdriver &raquo;</TD></TR><TR><TD CLASS="quote">Forget about what? Why would a Mugen or ITR exhaust be ideal?

I would think the Mugen has to be the worst design for power production on a boosted car.</TD></TR></TABLE>
Because ignorance is bliss; Everything expensive is good.

 

For what its worth, the most power Ive ever seen on a JRSC'd GSR @ stock boost is 228whp and 235whp, respectively, and both were running ITR exhausts with the bottlenecks removed. I dont know if that would necessarily make me recommend the ITR exhaust, because system for system there are plain to see benefits and downfalls compared to aftermarket 60mm exhaust, but it does beg the argument that 2.25 & 60mm exhaust are plenty efficient for these setups.

Point being, 60mm is fine for JRSC's. The large piping used in most turbo setups is not the same, since it has to do more with minimizing backpressure to aid in spooltime. The JRSC piping situation is more based on NA theories, since there is obviously not much of a spool/piping relationship there.

I wouldnt go larger than 2.5", and the difference between a 2.36" exhaust and 2.5" has yet to be proven. Especially at stock boost. I cant imagine its anything negligible.

As for the mufflers being chambered, I agree, that is a restriction you have to take into account as well. Unfortunately it is mandatory for a "quiet" exhaust. Unless youre running resonators on every straight in the piping, youre going to have to run a chambered muffler if you want to keep noise to a minimum on an NA or JRSC setup.

 

rs*r or the ws is the quitest your gonna get with an aftermarket exhaust

 

Thanks guys for all the help.... I'm gonna take all this info into consideration, oh and also im gonna get a carsound 2.5 cat, how will that effect the sound?

 

It does not effect sound that much. Since I am in the process of getting a different exhaust right now I have a 2.5 inch magnaflow cat bolted to my stock exhaust ( I know, I know ) Car sounds stock.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackSage &raquo;</TD></TR><TR><TD CLASS="quote">It does not effect sound that much. Since I am in the process of getting a different exhaust right now I have a 2.5 inch magnaflow cat bolted to my stock exhaust ( I know, I know ) Car sounds stock.</TD></TR></TABLE>Thanks...

 

I am using the JDM ITR exhaust on my 94 gsr with JRSC.. sounds almost like stock...