air fuel ratio with 50/50 water/methanol

[dudical26]

Wow I think you are all very conservative.

I run 11.2 during boost spike leaning to 11.5 by redline with pump gas.

with meth I run 11.5 during boost spike(31psi) and lean to 12.3 by redline.

Just tune slowly and see what works. For me leaning out helps keep HP up top on small stock turbo.

[recompile]

I'm not sure why you'd want to run a rich low/mid and a lean high end.... usually the opposite is what people shoot for.

You may get more of a flat torque curve if you do this, but IMHO it's only because you're either handicapping your low/mid by running extra rich or pushing the top end into risky territory by running too lean. It's not the worst thing in the world to have a downward trending torque curve, especially on a stock turbo.

Personally, I run between 12.0-12.2 the entire run, and dipping slightly richer towards the end

[Jack_of_Trades]

I personally gain more low end torque by adding a touch more fuel combined with 1-2 degree's more timing than I do with a leaner mix, which has less torque and handles less timing. Every car is VERY diffrent at peak load so there is NO correct tuning answer. I run around 11.2 at peak load and stay within 11.2-11.5 throughout my powerband.

[lemmonhead]

0.83 Lambda = 12.2 A/F