Shimming the Wastegate

[Isphius]

Always use the best gas you can find. 93 or 94. Or more if its available. The car is safe on its own, It will fuel cut before you can break it, or well overload the injectors. Thats why its there. But i wouldnt trust a stock HG. ARP studs and a new toyota hg(nothing else will do besides metal) at about 100 ft lbs will run 93 octane and boost to fuel cut just fine. And yes, A manual boost controller will go up from your factory setting, so your good there. I would say get the gauge first.