Ebay GT45 + 5.9 Magnum + E85 blow thru

I hope it works without having to touch my AFRs. If I switch to 93 for any reason I can just create a new profile/tune on the Fitech and alternate between it and my E85 tune. That's all in theory anyway. In practice it will probably be a big pita! Lol.

Well justntune a little to it, the meth will cause the afr to go a bit richer. Did you get a micro switch to activate it or boost reference?