Afr vs timing

kromberg

Too much timing would not cause a lean condition. Too much timing with a higher AFR( and low octane gas ) can certainly cause detonation.

You dont want to use the methanol system to increase your AFR, but to cool the intake charge and increase the overall octane level.

If the methanol system fails and you use it heavily for increasing/setting the AFR, you can easily burn up pistons regardless of the of timing. Increasing the timing will only make it that much easier.

Best thing to do is make sure you have the right fuel pump and injectors to support the AFR and power level you want.