Hey guys, I have a '06 Impreza WRX that has been highly modified. It had less than 15k on it when I bought it when I got back from Iraq in 2010, and have since gotten out of the Army and moved back to California. Sitting at under 35k now. Anybody who knows Ca. should start to see my problems. Massive FMI, short rammed K&N air intake w/silcone pipe, no CAT, unrestricted straight 4" pipe out the turbo, fuel pressure regulator, maped for 20psi, a leaky fricking head gasket and a turbo wastegate that I think is stuck part way open. I hit 4800-5500 and instead of boosting, I lurch and shudder. I just put the car in the shop yesterday as the clutch had started to fail. I owe less than 12grand on the car, picked it up for 30g's. Some advice please?