I am interested into going for a stage 2 remap for my nissan micra k14... however i require an aftermarket catted downpipe, do you have any suggestions of any and where to buy from?
Try demon tweeks. Depends on if you have the oval cat or the round cylinder type. I've only seen high flow cats in oval shape. But they should be able to quote you for a full system, but it won't be cheap.