Thread: E85 fuel FAQ
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Old 08-27-2005, 11:34 AM   #59
Jon [in CT]
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Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
02 WRX Sedan


Although E85 has a pump octane rating of about 100, it's still not knock-proof and, for example, you shouldn't try to eliminate that huge restriction in the air intake path that's known as the intercooler.

I expect that if you're optimizing your fuel enrichment map and ignition advance maps to produce best torque for E85, you'd still run into some load/rpm conditions where knock prevents the use of best torque settings and that is where water injection would help produce more torque.
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