Quote:
Originally Posted by 90503
Didn't mean a fuse pull would void a warranty, of course...I should have expressed that better...lol
But as far as the warranty...In your opinion, is there any reason why what is done by a "tune" to improve this octane-table-performance business cannot be done by a dealership? Could the same thing not be accomplished under a "tsb" to satisfy the customers and maintain the warranty? Why do you think GM does not want to perform the same "tune" that would eliminate the need for a fuse pull?
Thanks again.
|
The calibration from GM allows for a variety of fuel qualities and octanes. You can't calibrate a single timing map for all the cars due to build tolerances, weather and altitude differences, driving styles, fuel quality differences even among premium much less lower octanes, etc etc. There would be cars out there way down on power and there would be cars out there pinging down the road non-stop. There has to be a grey medium where everyone can live.
A dealer can't alter the tune in the car, only upload a set flash (like when you update the firmware on your camera or phone). You don't really know what and how the changes were done, just the features of the change.
GM could do whatever they want with respect to the learn logic of course. But they almost HAVE to set the high octane table to high and the low octane table too low. How the tune adapts in between is subject to debate.
Like I said, a tuner can change the criteria of the learn logic (some of it at least). Personally, I don't see the issue. Yes, pull the fuses once if it had bad gas. Run premium and stop worrying about it. It's not a big deal, just something people can fuss over.