Took my Z to JTran Tuesday for retuning. Baseline on a Mustang dyno was 317/294 @ 8psi. I knew it wasn't strong as I was told from PowerFab. Three pulls later and 370/346 at 10psi. Car wasn't making anymore boost and thought it was the boost solenoid. Ruled that out through trial/error. Got underneath the car to check the waste gates and found a loose coupler. End result was 446/446 @ 16psi on 93 pump. Also got the two-step working...
