Gen III Flex fuel

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08-07-2014, 10:36 AM

#41

Lextech

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Quote:

Originally Posted by kbracing96

Would be nice if the tune had a table for adding more timing when it see's higher % alcohol in the fuel.

What about B5947?

Jeff

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08-07-2014, 12:25 PM

#42

oakley6575

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KB, the ethanol timing adder is the table I didn't see in my tune until I updated HPT. So that table is there but I'm not sure it would really be functional if we will be spraying meth on top of the E85. Every thread I have read has stated that the engine didn't take any more timing with the E85 added vs the regular pump/meth mix. When they added timing it didn't make any more power. So If we weren't boosted or spraying meth, obviously that table would be really nice to have. Just not sure if it will be effective in our situation.

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08-10-2014, 06:54 PM

#43

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Quote:

Originally Posted by Gadgetized

Why not buy a used PCM for $50 with the stepper motor option in it, and flash in a van OS for 12592618. EFI Live has made the CAX file so you can lower your min pulse width for very large injectors, it has flex fuel, a 4l80e option, and a 3 bar COS. Thats what I have in my truck, and will run that in my Chevelle when it is done.

What is a stepper motor option? And what is involved in swapping to it from a 411 PCM?