hexdmy

We did increase the boost, I'm not sure how much of the power gains were from the boost increase, but I can tell you that the previous tune, that the car came in with, was not optimal for Steve's setup. Specifically, it was very rich, which was causing drivability issues, and the load scaling (TP or theoretical pulse width) was not setup correctly with the MAF/injector combination that was installed on the car. Basically we were running to the end of the timing and target afr lookup tables well before our target boost levels. So whether we were running 8 psi boost or 18, our timing values remained constant, which is not a good thing. Because the car was running so rich, it has some very noticeable drivability issues (ie misfiring) , that were not nearly as oblivious on the dyno, as on the road. Below are the power graphs and aft/boost graph.