Stock exhaust max power ?

[andyg plym]

I've been toying with the idea of having a break from my loud exhaust system, just wanted to know hyperthetically speaking how much of a restriction on power it's likely to cause?

Rs2 setup 1.9 ish bar....

What bhp am I likely running before and after?

Thoughts ?

[Rusty]

Much simpler to get a proper system on there with a V banded swap in/out silencer.

Suggest you drop the diameter from 3" to 2.75" for the last metre or so.

My system is 3" DP, 200CPI sports cat, 3" to a Y pipe with the cutout valve on it. From there, it's 2.5" over the rear axle into a pretty large rear box with 2 2.5" straight cut pipes. Silent of a cruise, fruity on full power, mental with the valve open. Power was in the 360bhp region as the exhaust is 3" where it needs to be.

[andyg plym]

No desire to spend big money on exhausts, I'm one extreme to the other lol

When was the last time you went in an s2 with a stock system ? I went in one a few weeks back and it was silky smooth....loved it !

[poor-boy]

I have a Audi URS4 Avant with a standard system and I sit in traffic and think the car has turned itself off

But it is bliss on the ears after driving the S2 with a 3inch Militek from turbo back

[Rusty]

Andy, jest get your current one modified with a swap in centre or rear silencer, that'll take the sting out of it. Shouldn't cost more than £150 including V bands.

If you're going standard, which I don't think is a great idea, then you'll have to work out some way to tying the 3" DP and single cat(?) in to the OE system. I would be very worth while checking if the RS2 item is different, as a stock S2 system is quite restrictive on even a stock car.

[rynaqui]

Wouldn't switching to a more restrictive exhaust on chipped RS2 setup possibly cause surging?

[my2000apb]

Wouldn't switching to a more restrictive exhaust on chipped RS2 setup possibly cause surging?

I wouldn't think it would be THAT BAD but youd def lose some spool up

[GazzaG60]

mild steel system would give a smoother feel than stainless

[andyg plym]

I know your all thinking I'm nuts but it's my daily and gets driven round town an awful lot, I want to hear the 5 pot again rather than just noise, yes mine sounds lovely when you are on wot etc

So anyone else want to have a guesstimate on the max power. ? These 380bhp chips you can get are allegedly for a standard rs2 set up .....

[Mcstiff]

How about trying an exhaust "silencer" http://www.horsepowerfreaks.com/sale...aust_Silencers

[andyg plym]

I'm not interested in chopping the straight through up as I'd use it again as is.
I did used to have a miltek complete system but that was loud too at 2.75 inch.

I'm talking about stock system complete including downpipe but gutted cats. Mines an import so the cats are not mandatory

[caterpillar]

why do any chipping and all that, if you dont want the power... if it loud, use a silencer more... even in 3".. about 300hp with the "revo" chipkit, and the org exostpipin...

[andyg plym]

Jeez you lot, it's only a question.....

It's not like it's going to be all show and no go....yes boost will feel slightly lost but how often is it you are on wot !

I'm trying to make it more comfortable, it's got a 7a flywheel so obviously isn't as smooth as it could be, out of all 10 s2s I've owned it was an avant with a stock exhaust that was the nicest to drive. The miltek was loud, hence why I sold it and thought I'd might as well keep the 3 inch.
I'm talking from experience here.

I want to choose the s2 to drive on a daily basis rather than the wife's spaz chariot zafira.

I just want to know what's the most power you can see from a stock system. ?

[JP]

At one point when mine was a daily for 35k miles of its life the drone and everything bugged me. I wanted what you are seeking smooth quiet and a nice wot roar without giving you tinnitus.

Played around with loads of combo's finding a nice compromise in the end. Ran a straight through 3" system from turbo back with no silencers literally a 3" tube and mounted the stock backbox to it.

Made 574hp like that and was bliss to drive as a daily, nice rumble when openedpup, no droning and quiet enough you could have a normal conversation wuth your passengers.

[andyg plym]

Thanks Jp !

Did it sound like a 5 pot in the cabin? As in like a kv engine which is arguably the nicest sound of all the 5 pots ? Mine sounds like a yank v8 until you open it up then it sounds more like a group b .

To me a stock system ALWAYS will make it give the 5 pot tune