Just your normal stuff, history, knocks, boost, misfires etc, I've got mk5 gti mk2 Cupra and mk2 s3 I've done the same to all of them, and then just plan to do a oil and filter every 5k with 5w40 mixed reviews on oil type, but rtech seem to say 5w40 for a modded car, and I've only ever had good...