P600wrx

iTrader: (1)

i have an avcr setting A was 0.8 B was 1.15 all was ok till fuel pump went, replaced it and now i can't boost over 0.78 without the car hitting what is like a boost cut, only happens on high rpm over 4500k, and the rev couunter will drop as if engine has been turned off, if i squezze the pedal really slow it will boost better but still have slight hesitation, all this has only happened since fuel pump change,

thanks guys mark

stephen beynon

iTrader: (7)

have you had you map changed for new pump

f4la k

iTrader: (1)

Why would he need the map changed for a new pump, its the regulator that controls the pressure.

What kind of pump did you fit, and more importantly where did you get it. Not fleabay..

P600wrx

iTrader: (1)

as the car is a '96 wrx it had the larger pump on it, it now has the smaller later style pump, would this be the cause, i doubt it as it will still pump at the 3bar pressure not sure of the flow rate it is