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Who has pushed teh limits of pump + large amounts of alky?

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turboglenn

15+ Year Contributor
6,375
123
Nov 5, 2007
RIpley, West Virginia
Just wondering who's pushed the limits of what alcohol or water is supposedly capable of doing with pump gas when injecting enough ( 30% total fuel volume at most)

The WiKi has claims of or mentions running 30* timing, 30psi boost and 12:1 AFR's and leaner on plain pump gas and that amount of alcohol.

Now does this mean one of those three, all of them together ( as it mentions in the last paragraph) or just a slight increase in all of them.

I would just like to know if anyone pushed 25+ PSI, 25-26* + TIMING and AFR's as lean as 12:1 and leaner? I'm intrigued, alcohol has always been a sketchy thing always bragged about but was never really big enough for me to see a lot of it in use, so i ask you, the guys running it hard....What are my limitations besides the usual? Any alky/water specific advice you can offer would be sweet.

I have a goal of running 25-28PSI, if i have to be a little more conservative on timing, so be it. And the car did feel a LOT more powerful at 12:1 when i was dialing in the alky tune, but not knowing any more than i did at the time i kept the AFR's hitting 11 flat to 10.8 at ~18-20 psi. I'm learning that in "theory" i could have pushed a LOT more, am i reading wrong or taking what was said in the Wiki Wrong?
 
I dont' have a knock metering device till tomorrow, there's not even one in my block because i run a stand alone that doesn't have a knock provision. So i don't know since my MSD knock sensor went bad when i tried to dyno tune it. Also i was limited to 20psi because of a malfunctioning EBC and no manual one to use, so i did the best i could with what i had. But i found out i had less alky than i needed to push it anyway, so we'll try for round 2 here very soon. I tuned it to 11:1 on alky
 
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