can anyone out ther help please. I ned to know if I put a exhaust system on my STi V7 . System is downpipe, front, mid and backbox (4 piece Janspeed) would I need a remap. Spoke to a few traders who all DONT KNOW.

Im not replacing the upipe so if anyone out there knows I'd be gratefull as dont wanna spend £650 on a system to find I need to spend £750 more on remap

Or do peeps with JDM's have em remapped for uk fuel anyway?

 

On any new age STi its recommended that if you run a full decat that you have a remap to match, main point being the boost spikes.
Do you have a knocklink fitted?

Tony