as above had my car detailed yesterday and when i picked it up started the car and the warning light on the boost gauge was continusly flashing with no reading on the gauge also when i give it full throttle it got to about 5k then died for a sec do you think there some water or something got in some wear what should i look out for cant see any obious pipes hanging off cheers

 

normaly when i have my boost controler turned off the car would boost to 0.5 bar and would idle around 500 when the car is switched off the neddle sits at 750 now the neddle sits at 750 constant with the flashing red light but noticed last night when i put my foot down the neddle ris to 500 which would be -0.5 i think but the car is def still boosting ok the gauge is a greedy one any help would be much apreciated thanks