ok i just replaced my hg on my 90 turbo and it is idleing at 1300rpm cold and drops to 500rpm hot and has a horible miss... it is also only building 5lbs of boost on the fresh rebuilt turbo off my 86.5 when it was making 9 on that car. i reset my timing to 10 degrees my heater is workign this time (im greatful for that). i put a greddy 1.5mm mls in and a new timing belt that is set corectly on the crank and the cams..... i am lost on what is wrong any sugestions

Hmmm. If you didn't use the jumper wire in the diagnostics box while timing the engine.
You're not in time.

well i figured it out one of my injector o-rings split and blew out when i boosted... major vacume leak. it was pulling 4-6 inches of vacume and the boost was just blowing past. i spent the $30 per o-ring and replaced em all while it was apart... now making 13lbs of boost and runnin a 13.91 at 96 mph at maple grove last sunday... broke out b/c i only got 1 trial and ran a 17.58 at 102 (great track prep rigth). well that was alot easier than i thought it would be with my experiance with MK3's and thanks for the responce supramacist

You as well can be on the look out for a pm later.