Hoping for some help with my gti it’s had an annoying problem since buying it and can’t seem to get to the bottom of it! It’s a 2007, stage 1 map, full exhaust and ram air induction kit! Every time the car gets up to temp the revs don’t like coming back down in neutral and when driving doesn’t matter what gear your in if you let off the accelerator the car literally drives it’s self seems to be a lot worse in lower gears it’s literally as if cruise control is on when it’s obviously not! It starts absolutely fine and drives lovely apart from the above I’ve got vcds and was getting code P0507 which wouldn’t clear but since changing the rocker cover gasket it’s cleared and hasn’t come back I’ve also done a throttle body realignment/adaption which was no help and it’s not showing no misfires at all any help will be massively appreciated It’s had all new genuine parts fitted listed below
R8 coils
Ngk plugs
Rev g diverter valve
Pcv valve and hoses
Vacuum pump seals
Brake booster hoses
Dipstick
Rocker cover gasket
N80 valve