Lol octane booster... Ill be honest if I see less then 2 and its not consistent I don't even care. I run a 2.8" setup and I regularly see 2* on shifts. I just say "**** you" and keep going.... ask SnowTh1ef. He is running a bastard 3.4 setup tuned on a narrowband with literally no supporting mods other then e85 and injectors on a fully ported blower... Oh did I forget to mention ITS A HIGH COMPRESSION TOP SWAP?!?! Bursts of Kr are part of his daily drive. It scares me. Stupid Bonneville.