Which Exhaust Setup To Go With? (r34)

[adzR34]

Im interested Upgrading my stock exhaust system, i have a stock r34 gtt auto coupe. I was wondering if i bought the front/dump + the high flow cat and leaving the stock cat back be, power wise compared to just doing the cat back.

id just like to know wat power gains id be looking at if i do this combo system or whether going with the cat back is better bang for buck.

I was maybe thinking of keeping the std muffler look on it if the front pipe/dump/split + cat make more of a difference than the alone cat back. I know the cat back will give me more sound but i only am looking for that slightly deeper sound when she goes.

im probably not into doing the whole system from the turbo back so id like to know which setup will be more gains verses costs.

Any info or ideas will be great!

thanks

[handyandy]

why not do the whole exhaust?

[rgr34]

i myself just got a cat back exhaust in my r34gtt and feel a difference in power..... like alot of ppl in here id say do the whole thing.... the rear muffler is quite restrictive.... power from cat back is said to be 10 rwkw or so...... i think theres more gain from doin the front dump and cat but u need the cat back to get the most out of it....

[satanic]

1) Turbo Back system... Apexi N1? Little over $1k I think

2) Go back to your importer/dealer - trade them your stock exhaust + cash for a better exhaust system

My cat-back Trust PEII only cost me $300 from memory

[adzR34]

thanks for the replies guys,

hmm those prices sound pretty good compared to what i got quoted at bel garage, for the cat back hks silent hi power i got quoted $1K included fitting. The Reason why i wanted that system is because he said it has some built in silencer that doesnt make it sound too droney and mine being an auto i wouldnt want it to be that constatnt loud humm.

shudnt be too bad if i can find a good turbo back system @ $1K that makes good power and isnt too loud, just so i can still hear the turbo hehe any ideas? What do most of you guys run?

Stan you guys can fitt them at your place too?

cheers.

[nizmo_freek]

Have a read of this thread, should help you out a bit

http://www.skylinesaustralia.com/forums/in...howtopic=147111

[gt-t_r34]

i'd reckon you'd get more power from the front half of the exhaust but you'll always have that restriction in the catback! the trust pe2's are a nice quiet exhaust and reasonabley cheap....

[(oo\__4Door__/oo)]

i have a Hcr32

rb20det

i had a front dump pipe first and it made a world of difference to the way it spooled up, made it a lot better to drive day to day, but at the top end lost its pull

now i have a cat back wit standard cat (soon to be hi flow) and that made all the difference up in the rev range, it wasnt gettin choked up,

this is all in the last 3 weeks so the feeling is still fresh for me,

i liked the idea of having somethin so quiet, so find ur self a system wit silencers that made a bigg difference

[handyandy]

if you cant hear the turbo after you install your exhaust, then get a bigger turbo

[adzR34]

Hahaa yehh just bolt one on..

nah im really thinkin of buyin a hks silent hi power cat back and a good front pipe plus cat

that should be good from like 20-30 rkws right??

[32vspecII]

dbl post

Edited December 30, 2006 by arkon

[32vspecII]

the cat and catback/muffler are the 2 most restictive bits , do not underestimate how much your shitty compliance cat sucks power if you still have it

the dump/front is actually not bad for a stockie , you will get very minimal power gains changing it while still having a very restrictive cat sitting at the end of them

i got a trust pe II for my old r34 sedan from autobarn on special about 800$ delivered , you can fit yourself easy

[Yo-Yo]

Sorry to hi-jack...

But since we're on the topic of exhaust systems & this thread is still active I thought I might try my luck here...

Does anybody here have the 'nissan sports muffler' with silencer? There's an in-cabin switch that says 'sport & silent'

I'm planning on my exhaust now & I was wondering if anyone knows whether it's worthwhile to change it or if there's any need. At the moment I am planning on a high flow cat, split dump pipe & 3" piping.

I want to keep the sports muffler for the fact that it has a silencer & if I remove it then the in-cabin switch will be useless.

Any info is appreciated

[Howie]

Hey yo-yo. Yep i've got the nismo muffler with the silencer as well. Mine's seized onto wide open (thankfully).

It's restrictive but not as bad as you would imagine. I did the front/split pipe and left the original nismo cat-back and there was still quite a bit of flow, with a bit more of a gruntier note to it. The stock front pipe is where it gets really choked up. Anyhow, i'm going to a Trust PEII shortly.

Btw, leave the wiring for the silencer there, and perhaps you can use it with something like an apexi control valve later on.

Edited December 31, 2006 by Howie

[adzR34]

Ok people,

Im deciding to either go with the trust pe2 or the hks silent hi power cat back systems. What can you guys recommend for a non droney, nice sounding, value for money system? which one would you choose?

[gtst25]

Ok people,

Im deciding to either go with the trust pe2 or the hks silent hi power cat back systems. What can you guys recommend for a non droney, nice sounding, value for money system? which one would you choose?

Hi there,

I've just ordered the hks hi power silent for my r33 gtst - will be about 6 weeks until we'll fit - I'm hoping it'll be less droney than the existing one.

Cheers

[Yo-Yo]

Hey yo-yo. Yep i've got the nismo muffler with the silencer as well. Mine's seized onto wide open (thankfully).

It's restrictive but not as bad as you would imagine. I did the front/split pipe and left the original nismo cat-back and there was still quite a bit of flow, with a bit more of a gruntier note to it. The stock front pipe is where it gets really choked up. Anyhow, i'm going to a Trust PEII shortly.

Btw, leave the wiring for the silencer there, and perhaps you can use it with something like an apexi control valve later on.

Thanks Howie, you're a legend.

Just to confirm we have the same type of cat-back, It has a silencer where the in-cabin switch says 'sport' & 'silent.' On the side of the tip it has a plate that says nissan 'sports muffler' in running writing font, you called yours a nismo cat-back?

Did your silencer seize after you changed the dump pipe or before? If the increased flow caused the silencer motor to stuff up I might as well get a full exhaust anyway but I'm on a budget so I'd prefer to keep the sports cat-back if it's decent.

Cheers again mate

[Howie]

Just to confirm we have the same type of cat-back, It has a silencer where the in-cabin switch says 'sport' & 'silent.' On the side of the tip it has a plate that says nissan 'sports muffler' in running writing font, you called yours a nismo cat-back?

Yep mine's exactly the same one bud.

Did your silencer seize after you changed the dump pipe or before? If the increased flow caused the silencer motor to stuff up I might as well get a full exhaust anyway but I'm on a budget so I'd prefer to keep the sports cat-back if it's decent.

No that was always like that. I understand it's a common problem with the r34 nismo exhaust, to rectify you just spray wd40 and bang at it with a rubber hammer - i did that and it fixed it up for a while.

Cheers again mate

No worries at all buddy.

[666DAN]

With a good split dump you can't go wrong, my one is a CES but there are a few others that are also very good.

[32DET]

I also went CES dump/front with metalcat cat and apexi n1 muffler with 3" piping in between, in my opinion it is a reasonably quite system, only becomes loud when you really give it some. The gains were incredible though. Spool up quicker, better top end everything improved.