SUBARU IMPREZA WRX exhaust advice - new age
Discussion
Do you know if it is an aftermarket stainless steel performance exhaust or just a bog standard STi system.
Best thing to do with a WRX is change the whole standard exhaust for a stainless steel decat uppipe, performance high flow cat(100 cell) downpipe, and a cat back system. Often much cheaper than the OEM system which strangles the cars performance and doesn't warble as much as you'd like.
Best thing to do with a WRX is change the whole standard exhaust for a stainless steel decat uppipe, performance high flow cat(100 cell) downpipe, and a cat back system. Often much cheaper than the OEM system which strangles the cars performance and doesn't warble as much as you'd like.
I have got a WRX myself and to be honest it's never crossed my mind to put another bog standard exhaust on it whether it be STi or otherwise. If i remember rightly the STi exhaust from the cat back is 2 bits, where as the WRX exhaust is 3 bits.
I have a 2004 workshop manual here let me check and i'll get back to you.
I have a 2004 workshop manual here let me check and i'll get back to you.
The Sti anf WRX systems are the same from CAT BAck. The only difference is the back box. the Second CAT and the Resonator section are all identical.
I dont know how much you are paying for this but i picked up a complete JDM STI Exhaust Headers Decat uppipe downpipe and the 3 rear sections for a tenner. They are not really worth any money second hand as no one wants them!
I dont know how much you are paying for this but i picked up a complete JDM STI Exhaust Headers Decat uppipe downpipe and the 3 rear sections for a tenner. They are not really worth any money second hand as no one wants them!
ScoobieWRX said:
Nice one StevieB 
I was about to report back and say the same about the STi exhaust.
So the moral of this story is......get an aftermarket exhaust as there is no mileage in putting on another std system
I got mine with a view of porting the headers and the decat uppipe to remove the one from the MY04 WRX ( As there are 3 CATS) I was about to report back and say the same about the STi exhaust.So the moral of this story is......get an aftermarket exhaust as there is no mileage in putting on another std system
But also comes in when i return the car to standard for when i sell up!
If cash is problem for a new aftermarket system, H&S do a good back box to get the burble back and on Scoobynet there is often groupbuys with good discounts and the backbox can be had for £170
Steve
Lads - thanks for the comments, I agree with what you're saying
Unfortunately I don't have cash just now to buy an aftermarket system so am looking for a quick fix. my rear cat is fookt and I thought if I got an STI system it would fix the problem till I get an aftermarket system.
I've got one lined up pretty cheap.....
Unfortunately I don't have cash just now to buy an aftermarket system so am looking for a quick fix. my rear cat is fookt and I thought if I got an STI system it would fix the problem till I get an aftermarket system.
I've got one lined up pretty cheap.....
RFSA Burfom said:
Nice one mate. Might give it a shot. Which means I'll stand staring at my car for an hour and give up.
Just make sure you ahev a couple of spare bolts.. and soak the bolts on the exhaust in WD40 or similar overnight should make things easier.. Plus a decent set of axle stands.. STeve
Which one? Or does it not matter? I'm new to Subaru; just picked up a Forester my04 2.5XT
ScoobieWRX said:
NO it doesn't.
On a WRX or STi you only need 1 CAT to get through emmissions testing!! All changing the backbox will do is make it sound nicer, hopefully, and maybe liberate a few extra gases more quickly which can only be a good thing.
On a WRX or STi you only need 1 CAT to get through emmissions testing!! All changing the backbox will do is make it sound nicer, hopefully, and maybe liberate a few extra gases more quickly which can only be a good thing.
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