Subject	Lambda is the same for all fuels
Posted by	sparkie on April 14, 2010 at 3:49 PM
	This message has been viewed 166 times.
In Reply To	running on e85. a/f ratios timing at tip ? posted by Dane (Houston) on April 14, 2010 at 09:45 AM
Message	but most WB displays AFR. For gas, stoich AFR is 14.7:1. Ethanol/Methanol's stoich point is 6.5:1. If you can log your WB output, calibrate it to lambda=(V(out)*2+10)/14.7 When your tank has only E85, your fuel map should be tuned to lambda or use 6.5:1 stoich AFR vs 14.7. You can't just switch over to E85. The fuel injection amount should be roughly doubled to maintained the same AFR target. www.ztechz.net ICQ # 14337317
Follow Ups	running on e85. a/f ratios timing at tip ? - Dane (Houston) 09:45:34 04/14/10 **and tips?** (n/m) - Dane (Houston) 10:34:58 04/14/10 Lot of tips in this thread: - not4resaleZ 11:38:11 04/14/10 That is a very good link, and everything I was looking to - Dane (Houston) 14:37:01 04/14/10 Re: running on e85. a/f ratios timing at tip ? - Seb@Specialty-Z 11:40:56 04/14/10 2nd, my tuner say's he uses the same "targets" as pumpgas. (n/m) - 1badz32 (MN) 11:46:21 04/14/10 Lambda is the same for all fuels - sparkie 15:49:18 04/14/10 yes, im going by lambda, and i wont fine tune untill i have - Dane (Houston) 09:00:50 04/15/10 Please keep us informed on what you find. (n/m) - not4resaleZ 09:56:11 04/15/10 Check all aluminum fuel parts that contact the E85 - sparkie 12:24:06 04/15/10 Your WB display may be skewed to the richer side - sparkie 15:55:52 04/14/10 E85= higher boost potential - arthoes 19:30:28 04/14/10
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