Hi all just got my exhaust parts to decat and deresonator my 2003 wrx prodrive having a go on Sunday
Are there any things I should look out for when doing this difficult bits or tips on things never tried this before any help would be great

 

what parts have you got and are you taking away all 3 cats? removing just one of them will require a remap

 

Hi just taking the cat off the one straight after the downpipe and removing the resonator as well.... I've got someone coming next week to remap it from race dynamics also the car is prodrived so think it may have a sport cat in the downpipe also not sure tho

 

as its got the ppp, wouldn't that cat be already taken out?? or is that just STIs with ppp??

 

Yeah it's the sti ppp pack this is removed this is the pic of the cat I'm removing

 

Removed cat today and just about to remove resonator and rounded bolt off so put an end to that for today ....... Back to decat I didn't realise the differance in feel of the car with cat removed its feels 100% better the turbo hits in quicker and pulls like a train very happy so far just to get the sound I want now off with resonator next