E85 help
Thread Starter
Teching In
Joined: Jul 2006
Posts: 7
Likes: 0
E85 help Im pretty new to tuning and you sure seem to be the guys that are friendly and helpful to ask. I did a ls3 swap into my 69 camaro it has headers and a g6x3 cam with stock injectors. I recently just added all the hard parts ethanol sensor and 60 pound injectors to the car for the e85.Can you help me with turning on the correct parameters for the fuel if i attach my tune. I also havent quite figured how to rescale from my stock ls3 injectors to the 60 pound too. I was even slightly confused at what pids to log to watch the ethanol percentage also. I would really appreciate your help I dont want to mess anything up and im a bit nervous thank you to all those that reply Im trying to learn the best I can. The injector flow rates are suposed to be 682.5cc/min
Yei sayer... E85 burns clean smells good makes more power and if that wasn't enough how about length and a half even on low compression stock engines.
Engines run much cooler cheaper than gas my favorite race street pump fuel.
Used for excess of 30psi boost.
Engines run much cooler cheaper than gas my favorite race street pump fuel.
Used for excess of 30psi boost.
Thread Starter
Teching In
Joined: Jul 2006
Posts: 7
Likes: 0
Well as of now I did pick up 16 whp and 22 ftlbs by just activating the e85 in the car and IAT also dropped, so all the naysayers I say try it your self I even kept the stock ls3 injectors. But you are right Im prepping for a whipple 2.9 for even better results.
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Verdad Gallardo i run e85 only in my turbo truck on 20psi i know the benefits, but 16whp in a na car compared to the loss of gas mileage isn't worth it, imo. IAT shouldn't be affected with e85 unless your spraying it at your air filter, it has no effect on the air coming into your intake pipe. you will see a difference with egt though. now when you whipple it e85 all the way
First off there's no rescaling your injectors you input the new injector tables from their manufacturer. You enable flex fuel under the fuel tab. Look under your stoich Afr table and ensure its sloped in regards to ethanol percentage. Fire it up and scan and drive.
Changing airflow tables is wrong when you're changing fuel. Its completely archaic.
Changing airflow tables is wrong when you're changing fuel. Its completely archaic.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
You will set B3601 (stoich AFR of fuel being run) to 9.7 (which is the stoich AFR of E85).
You would look carefully at the PE table and make sure that it is something like EQR 1.175.
You would make sure that PE enable tables/parameters allow PE to enable sensibly (see 2002 Camaro tune for a good example).
You would set B4001 (IFR table) from the new injector specs, scaled from rated pressure (43.5 psi) to your measured rail pressure (58 psi)... to rescale, multiply the rated flowrate by the squareroot of the pressure ratio.
You would also set the various other injector tables/parameters from the injector specs, as provided.
You might also add some ignition timing since E85 has a higher effective octane rating.
If you goto the EFILive forum, log the same pids that the Calc.VET thread suggests.