There is one grey z out that I have been in on a few occasions and he is steady runnin 24 lbs on a factory turbo. the only thing hes done to the car is adding fuel (3 injectors),using a manual boost controller, blow off valve, and a very large intercooler. The thing is incredibly fast for the amount of mods done.

On your extra injectors what are you using to trigger them? and do you kick them on at differant times? Im assuming the 450 and then the 1200 or is it simultanious? I have seen a few differant switching methods.

Any way I am no expert but I have seen some incredible boost levels out of a couple of z's. I will talk to my friend and see if hes done anything else that Im missing if so I'll post it later....hope you get it resolved ...