Are there any telltale signs of compressor surge aside from broken parts? I just got the Satellite on the road after 10 1/2 years of "improvement". It has a 383 with an E-bay(chinese)copy of a Garret GT42 on it. The compressor spools and it gets to 9 lbs pretty quickly.All you have to do is accelerate about 50% while driving along at 30 m.p.h. and it will start to whistle. It pulls strong all the way through the revs,but I was concerned that the boost was coming up a little too soon. I guess I could always buy a real turbo from someone who actually knows what he is doing, but for now I'll try to learn a little and have some fun with this one. Thanks for your help, Eric