Hopefully your fuel regulator is boost referenced, is it?One other thing I went through on a EFI BDS provided was not all the injectors had the same impedence ratings Hopefully Rich and FAST didn't make that mistake BTW, I went through the same thing with BDS, I think most of it was through there ignorance, not intentionally screwing things up Maybe not I like Litlefield a lot when it comes to Roots type blowers