How rich can you run before you start fouling plugs regularly?? What is the max AF before you start fouling plugs?? I ask because I want to run my T78 at its max on pump gas and I want it as rich as possible in case of detonation or spikes. What else could cause my engine to blow beside a lean mixture?? I ask because I have read that you shouldnt go over 550RWHP on 93 Octane. If you can keep a rich mixture, why cant you go further than that safely?? Just curious?? Thanks in adcance! PEACE!