Fella i thought my ZX was jacked up because of the swoosh sound that was coming from under the car. It turned out to be nothing at all. When I clean the engine with transmission fluid for 30 minutes then a second rinse with kerosene for 15 minutes the turbo actually got a cleaning. There was ALOT of sludge in the engine so imagine what was in the turbo-it spools louds as **** now. I was leaving the shop and this Supra pulled next to me at the light, he goosed the engine a bit at the green and we were off! It was dead even considering I was not sure if the guy wanted to REALLY race. Next light we take off-by second gear it was a "wrap". The guy ask me if I had my boost dialed up. I beat the guy by at least 1 1/2 cars. Gotta admit it felt great having my turbo running after all the time an $$$ that went into the effort.