pbee

has anyone replaced or looked at the up pipe on the 03 model wrx. ?

I was of the understanding there are 2 cats in the 03 wrx, one in the down pipe, one in a "cat pipe" and a resonator in the centre section.

Ive just been told by a supplier there is also one in the up pipe. can anyone confirm this, is it worth replacing if there is a cat in there. heard its a bit of a mare to fit !!!.

STI's are supposedly different and do not have a cat in the up-pipe. so if anyone has looked at the 03 wrx in more detail would love to know for sure either way.


cheers


Peter

MadMark

Try the technical boys - but yes I can confirm that is the case with my 03 WRX!

pbee

madmark, your 03 wrx had a cat in the uppipe ?.

Did a search, GreaseMonkey concluded the 01/02 cars have a cat in the uppipe, this changed for the 03 model and the newer cars do not have a cat, but not sure if he was reffering to STI's only.

But would like to know for sure.

RRH

WRX 03 does have an up-pipe cat

MadMark

Yup agree with RRH

pbee

ok 2 for a yes, how tricky is it to change the up-pipe ?.

Im presuming with the rest of the exhaust changed and a remap im gueusssing about 270bhp, how much more will changing the up-pipe add ?

RRH

approx 10bhp ish? will breath nice without it though.

not easy to fit. intercoller off, downpipe off, release engine mounts and lift engine slightly. either that or you can come at it from the top, but you'd have to remove the turbo.

its a pig of a job whichever way you approach it

pbee

holy crap, the up-pipe looks so small in the picture, I guessed it wouldnt be too bad, gulp. be definatly avoiding that one.

cheers for the help RRH.

RRH

it's bloody heavy too so mind you don't drop it