I understand that to properly run a 3.4 pulley i would need supporting mods and at least 92+ octane gas. but if the only octane available to me is 91, what other supporting mods would i need to help KR? should i just stick with the 3.5?
Current mods: 3.5, CAI, Throttle body spacer, NGK TR6 plugs, 180 T-Stat, u-bend removed
(there is 100+ octane available at the nearest track where i live but thats not my daily driver preference)