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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
What Darrin is saying is true, at the same time the water and methanol being sprayed in before the throttle body is cooling down the intake air which makes it more dense and that alone makes more power with no changes to boost or timing just like driving in cold winter weather does so you'd have to be on a dyno to know for sure.

For the origonal question I would run just water and experience that, then add methanol in increasing amounts and road test while watching AFR's and feeling acceleration until you're around 50/50 and decide for yourself what works best for you.

I buy pure mehanol in a 5 gallon bucket at a fiberglass and paint supply store. Last time it was about $38 for 5 gallons. I use the large windsheild washer tank under the left headlight for the resovoir and it works great.
Old 06-03-2012, 11:54 AM
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