STILLEN 370Z Supercharger System - Announcement!!!

Phimosis

Yes. And no.

If you were going on a road trip and didn't have access to race fuel, you wouldn't damage your engine as long as you stayed off the throttle and out out of the high boost range as you approach redline. But, the uprev design is sophisticated enough to allow 3 fuel maps. So the people at Stillen were nice enough to make a map for 91 octane for me as well. If I don't have access to race fuel, I press "coast/set" on the cruise control, then simultaneously press cancel once for map 1 or cancel twice for map 2 to choose between 93 or 91 octane. The 91 octane map is timed very conservatively though and probably wouldn't perform any better than a good 91 octane tune with the 8 lb pulley. But, the higher boost levels expose you to higher risk for failure.