Hi,
I need a new Y-Pipe section for my exhaust. I have a resonated Cobra mid and backbox, and standard Nissan Cats. Does anyone know what y-pipes will fit this, as some adverts show 2.25"inlet 2.5" outlet, others show 3". I would like to keep it reasonably standard noise and power wise, as I don't want to create problems with engine lights and mots (or is this just in the case of straight through cats?)
Thanks