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E85 tune on 2007

6106 Views 10 Replies 6 Participants Last post by  2008SrxinFrance, 
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hi. i plan to upgrade my 2007 escalade to run with e85. first i use hptuner to modify internal program in the e38 ecm. activate flexfuel , copy values in all the flexfuel tables and spark tables , swap 30lbh injector to 54lbh flow rate. everything from the stock tune of a 2009 escalade. the only one question make me hesitate is that in the 2009 we have the FCPM module which is manage the fuel pressure and in the 2007 we don't have this module.
so does anyone know if fcpm is mandatory to fully activate the flexfuel mode ?
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Phoenixx
Not sure of the point but it requires about 30% more fuel. The stoich requires new pump lines etc to accept.

Tuning needs to be done as well as a ethanol sensor. After saying that, any miss with the tuning you will find it will run lean, but you will have no power.

Interested in the end result. Post the results, parts etc.
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