E85 update????
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I have a 2007 classic 5.3 flex fule and got the update and they didn't change a thing. The invoice said that they reflashed the computer and did a fuel relearn. I compared it to my stock tune and found no diferances.
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That sounds about right? What I did was read the new GM tune and added my changes and reflashed. Making changes to the tune that we don't have access to didn't even cross my mind. Now all I gotta do is figure out what AFR to command for the diffrent Stoiches (Dose Stoiches make any sence) in the PE table. I just tuned it for gas up to I think....12% Ethanol.
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No I have't tried it. I did see a help file on rtt and it looks bad ***. Dose it require any more credits to get rtt? I'd like to try it out. All I have done so far is tire size, rev limiter, speed limiter, fans for 160 t-stat, trans shift RPM, trans TQ managment, and A/C cut off rmp. and I did change the stoich up to I think 12% ethanol to 14.62. I just got it dualled out the Fri. befor Christmas and I had "another" O2 bung (Thats another story) welded on befor the driver side cat as well. Kroger and GM sent me a $20 gift card for E-85 and I just used it so I want to make sure all of the extra ethanol is out befor I tune it with the WB. I guess with the rtt you will need to reset your VE histogram after you make your changes??? Or can you just play with the VE table a bit and see if the cells are getting closer to zero. I have a stock MAF on the truck, but not on the Z28. I wounder if rtt would make tuning the MAF and VE that much easier?
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