Does the car smoke at all?
I have a mkIV GLI...before i deployed to afghanistan for 8 months, i noticed my turbo was spooling but wasn't pulling like it used to. Now that im back i want to fix this problem before i run a software upgrade on it and a turbo back exhaust. Anyone run into this similar problem? -Thanx
Do you hear any Fwoshhhh sound when it is spooling? it may be a boost leak
if not, get a air-fuel ratio gauge and check if your mix is running lean, could be the injectors not spitting enough fuel
-2011 MK4.5 1.8T VW Motorsport GLI R Proyect. Codename ".:Rolling Thunder"
-"The ammount of Love, Money and HorsePower We Can Have Is Never Enough" -Sensei Mawy Luna