already search, and can't find an answer....running a ls with a drag kit for a while, with a Tial wastegate with a 7lb spring, car's been running good. Installed a Profec B v2 and boost at 9lb really good, after that first run, the car won't hold boost. 1st gear 2psi drops to 0, 2nd gear 5lb drops to 0, 3rd gear 7lb drops to 0, it won't hold boost at all...checked all the vacuum lines, everything is good, checked for exhaust leak, couldn't find anything, replace the wastegate with a deltagate, same problems......guys have any ideas what it could be? also i pulled the boost controller out thinking it was it.....but it wasn't


Modified by lo0nY at 6:08 AM 10/15/2007

 

bump

 

Did you check your manifold and charge pipes for leakes?

 

yep....