evolutionm.net - View Single Post - Dyno Results! BBK on pump vs alky: Aquamist HFS-1 FTW!

scheides · Jul 2, 2009, 11:53 AM

I posted this last year:

Aquamist HFS-1, GM BCS, and Tephra v5: together at last!

That was on the IX turbo and I saw a 40whp/50wtq gain using denatured alcohol. I switched from denatured alcohol to 100% methanol, saw no discernible difference. Then went to 75/25 meth/water, and it felt the same after tuning. Now on 50/50 meth/water, I think this shows that with tuning, each is capable of nearly the same power advantage over just pump gas. I think the difference lies in the tuning, but I'm not even sure that will make a ton of difference either.

It has been said that 100% methanol tunes should target 11.0 AFR, 75/25 should target 11.3-11.4 AFR and 50/50 should target 11.8 AFR for best power results. I saw a negligible power difference going from 10.5 up to 11.8 while tuning, it was then adjusting timing that made the most difference.

Jul 2, 2009, 11:53 AM	#4
scheides Evolved Member Personal Sales Rating: (6) Join Date: Oct 2006 Location: Minneapolis Posts: 2,962 Drives: 05 Evo8 SSL	I posted this last year: Aquamist HFS-1, GM BCS, and Tephra v5: together at last! That was on the IX turbo and I saw a 40whp/50wtq gain using denatured alcohol. I switched from denatured alcohol to 100% methanol, saw no discernible difference. Then went to 75/25 meth/water, and it felt the same after tuning. Now on 50/50 meth/water, I think this shows that with tuning, each is capable of nearly the same power advantage over just pump gas. I think the difference lies in the tuning, but I'm not even sure that will make a ton of difference either. It has been said that 100% methanol tunes should target 11.0 AFR, 75/25 should target 11.3-11.4 AFR and 50/50 should target 11.8 AFR for best power results. I saw a negligible power difference going from 10.5 up to 11.8 while tuning, it was then adjusting timing that made the most difference.
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