SC Install resulted in 50 more HP...suggestions needed

ChaseZ

Ditch the canned Stillen tune. Ecutek if that's feasible.

Beyond there there are many ways to improve on the shortcomings of the Stillen setup. Spend some time reading through the forced induction thread and builds.

All that said, you are still well below Stillen's 400+ claims. What kind of dyno was it? That's too far off to just dismiss as a low reading dyno though, something has to be up. I didn't use much more than the manifold, blower and coolant pump from the Stillen kit so can't help diagnose the other bits too much.