yesterday went on a local rolling road and only managed 258bhp, when before it was making 276bhp and 281ftlb, so i asked them why, because the car hadnt been changed apart from a panel filter, long story short they plugged in the diagnostic and maf was gone cos of duff oily filter, replaced maf and filter and still the same but i have also noticed i cant reach my normal boost of 1.2 bar in all gears its only managing 1bar 1.1 if im lucky any ideas, could they have wiped the remap i had?? and its gone back to normal??

 

surely someone cud reply!!

 

Boost leak? Dodgy boost solenoid? Check all the boost pipework for leaks.

 

checked all pipe work etc cant see anything but it only started to under boost after the maf etc and ecu reset