put the car on the dyno and tryed putting the boost at 18 witch it will go but noticed why diong my run it started to sputter when in hard boost so i let off a/f was golden on the run. 1st run of the night i put down 257.at 15psi @ the wheel with the same tourq i was wordering if any body else had a problem like this or a way to fix it thanks for reading.

Boost leak? Double check all the couplers for the intercooler piping.

double check for leaks, but I assume since the AF ratio was good then you are prob good on the leaks. Uh, try checking the plug gap. BKR7E plugs are awesome. Mine are gapped to .030 and on 15psi I have no problems. Humidity can hurt your ignition system so perhaps you can close the gap slightly.

Also if you have to gap really small you can try to side-gap the plug to get better ignitability.

You may have to go down to .28 on the gap. High boost levels can get weird.

fixed and tor it down to put bigger turbo almost done .