My point is ethanol is not a performance killer and certainly won't harm your engine(as someone said above) it may be that your tune is off but ethanol is a better fuel for performance you may just need to adjust your tune. For example look at my experience today at the track with 93 vs MS109, does that mean that race fuel is a performance killer? No it means my tune needs adjustment to the fuel I'm using but overall the fuel is better for performance.
Originally Posted by nhs156
I don't need to, as I've experienced the adverse effects first hand of 10% ethanol fuel in engines designed to run on pure gasoline. Your argument about race cars tuned to run on E85 is neither here nor there.
Edit: another example is the ford flex fueled vehicles which run a sensor that detects the % of ethanol in the fuel and adjust the tune accordingly. The higher the ethanol content the more performance increases.
Last edited by jimefam; 02-11-2012 at 08:54 PM.