Mudsport96
Full Access Member
Hello, I've been considering a tune on my 06 Tahoe L59 SUV and have kind of come to an impasse.
In researching flex vehicle issues I've found some people have issues tuning the later P59 with the virtual flex fuel OS, like suddenly going to full e85 scale on regular fuel and over advancing timing. My OS is 12605114 from what I can tell is one of the early 2006 software versions (12587811 > 12605114 > 12606807 > 12613246).
Do you prefer tuning flex vehicles with the sensor as it helps to know actual ethanol content or is the estimated content ok?
I have considered installing and wiring in the real sensor and getting an older OS installed, but thought advice from a knowledgeable source to be the best plan.
I need to do a few things before I do get a tune per your site. New O2 sensors as these are original, fix the broken manifold bolts so the exhaust tick goes away and get a correct afr reading. And possibly wire a fuel composition sensor if you think that's necessary.
Thanks for any help
In researching flex vehicle issues I've found some people have issues tuning the later P59 with the virtual flex fuel OS, like suddenly going to full e85 scale on regular fuel and over advancing timing. My OS is 12605114 from what I can tell is one of the early 2006 software versions (12587811 > 12605114 > 12606807 > 12613246).
Do you prefer tuning flex vehicles with the sensor as it helps to know actual ethanol content or is the estimated content ok?
I have considered installing and wiring in the real sensor and getting an older OS installed, but thought advice from a knowledgeable source to be the best plan.
I need to do a few things before I do get a tune per your site. New O2 sensors as these are original, fix the broken manifold bolts so the exhaust tick goes away and get a correct afr reading. And possibly wire a fuel composition sensor if you think that's necessary.
Thanks for any help