having problems controlling the boost on my car. I have a 74GTS with tial wastegate, and im using the apexi AVC-R. all the vacum lines appear to be in good shape. and the boost controller is hooked up right. I also tried a manual boost controller and the same thing .... first gears fine then second gear the turbo spools up and just never stops boosting ... its hitting almost 2 bar ... I've only taking the car up to 6k rpm b/c its pushing more than what i want ... Im not sure were to go on this ?