But you have to drive yours on British roads
Loads of good info on that site, and some really funny posts. We're at least a bit more subtle here (except 3fiddy )
Back on topic, I agree with rtbiscuit (unless I had £3k spare for MOTEC). I was quoted £1300 for fitting AEM and tuning, but would have to source a harness myself. There's a group buy for the Haltech Platinum with tuning for £1300 on this site at moment. And it's £1500 if you find the right tuner anyway without the group buy. I'd rather save up and get the Haltech personally, even if it took a while.