Afternoon guys, ok here is the problem.... 17964 - Charge Pressure Control: Negative Devation - P1556 - 35-00 - - At the moment, it randomly goes into gimp mode, when its not in gimp mode it has no power (no turbo feel) until 3.3k and then it runs out by the usual 4.1k! Its been to a stealer twice.... they say the turbo is fine and have tried to fix it with little things, like a random sensor (cant remember the name!) they mentioned the acturator (spelling?!) and something else!? At a lose tbh, help!?