Just noticed my boost gauge is giving me 15psi then in different gears its 11psi. it has a stage 2 map on it from rtech and it should be 20psi so i have a problem but not sure what.
I have changed the dv valve for a rev g and pvc pretty recently so i don't think its that. I was advised to change the air mass flow sensor so could this affect boost? i haven't had any eml yet, best place to find one of these that is cheaper than vw they want over £100 for one.
On to the next thing.
I have a service due soon. Lastyear i had cambelt/waterpump changed. Do they change the cam follower when this is done?
Also i want to change my gearbox oil. Its a manual mk5 gti, so whats the best stuff and whats the best/cheapest place for this?
Cheers