I've got a 2003 WRX with PPP.

Recently fitted a Blitz Nur Spec R.

Next year will be fitting VF35, Walbro 255 & Remap.

Exhaust wise should I replace any other elements of the PPP system? Don't want to replace anything which could result in MOT issues.

Cheers fellow Scoobies

 

decat up pipe and sports cat downpipe so safe for mot might be worth having headers ported and turbo and bigger injectors i'd say but your mapper will advise you what stuff to do as it depends what your aiming for but you'l only be able to go so far due to the limit of gearbox

 

At the moment I'm just looking to get to 300BHP