Hi all, bought a 2.2 SRI Vectra C few months ago and love it! Joined a few car forums but no-one has reali been able to help, so reali hopin you lot are able to point me in the right direction!lol. From what i'v read and been told, the Z22se in the vectra c isn't the best engine to tune. I've fitted a dual exit cat back scorpion exhaust system, given it a good sevice, (have yet to install k and n panel, but will do soonish!) But hopin to get more outta it, can u derestrict the airbox on the vectra c and is it a good idea? Is there much more to do??? Any advice, tips or pointers wld be greatly appreciated!!