The other night the car car wheel spinned in 1st drove up to redline then ever since then my car when comes on boost makes loud whinning noise like a supercharger and hits fuel cut. The thing thats baffling me is the car is actually faster now as if it is overboosting. possibly the actuator is seized closed allowing to build up loads of boost im not sure. just took heatshields off turbo today and found 2 bolts loose on turbo elbow. tightened them up still the same. has quick look at intercooler piping joins vacum hoses etc. Will give them a better check when its not raining outside any ideas ? ive tried searching already.
car has FMIC Decat back exhaust. thats it the rest is standard. No manual boost controllers etc.
Thanks