Just want to check something... If you remove the 2nd cat from an STi is a remap a MUST? The downpipe one is still in place... I know a remap will improve performance and make the best of the mod, but what I specifically want to know is will anything go pop...
I've been told mixed things like as long as you don't track it and really give it some welly it will be fine. But i have got a new system to go on mine and i'm going to remap it just to be on t safe side. I also put a walbro 255 fuelpump on for avout £68 i think it was.
