I have a brand new on3 turbo with the 70mm turbo. I have a msd btm with 3924 plugs gapped to 32. I am using the stock springs in both the wastegate and bov. I have yet to try and hammer on the car since I have not been able to get the car to go beyond 2500 while driving. I have driven the car a total of one block and everytime the cars rpm reaches 2500 the car will cut out as if it is going to die then idle just fine. I have a abaco 85 mass air programmed to my 42's and a intank 255 fuel pump. The car recently had a novi 1000 with the same exact ignition upgrades and never had a issue with the car pulling past 2500. Any ideas what could be the problem I am thinking it may have something to do with the wastegate and bov or maybe the vacum routing.