foo.c
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2014+ Engine & Transmission Tuning
foo.c replied to pendragon's topic in 2014-2019 Engine, Driveline, & Exhaust
Looking at my invoice it says: Recall 16007 Sensing and Diagnostic Module reprogramming. It seems to me like it would safe to reload my ECM and TCM tune. Right? -
2014+ Engine & Transmission Tuning
foo.c replied to pendragon's topic in 2014-2019 Engine, Driveline, & Exhaust
I had the recall done today and I am pretty sure I lost my tune. The throttle feels much less sensitive was the first clue. Can I re-flash using my Autocal, or does that negate the point of having the recall done in the first place? Is there an update tune that incorporates the recall? -
Pulled my trailer up to Colorado from Texas and was getting 13 mpg against some serious 20-30 mph headwinds. Now that I am up here and dropped the trailer i got my best mpg on the display ever 23.8. That's with 4 people on board.
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2014+ Engine & Transmission Tuning
foo.c replied to pendragon's topic in 2014-2019 Engine, Driveline, & Exhaust
I've been researching this some (because I'm a nerd). What they are saying is theoretically true. GM uses a hashing algorithm to compute a checksum of the tune. The hashing function they use is most likely a 32 bit key space which is over 4 billion values, but with a big enough input size, eventually all hashing algorithms will have duplicate keys. What that means is that it's possible to have 2 different tune files hash to the same key, and thus not be detectable by the version checker. However, it's not a simple thing to construct 2 inputs that hash to the same key, and it still has to be a valid tune file that does what you want. I'm not sure how big the image actually is, but I'm pretty sure it's less than 4GB, which makes it a lot less likely. So, long story short, I'm skeptical that it can be done. Here is a link to the patent if anyone wants get nerdy. http://www.google.com/patents/US20120245788 -
2014+ Gas Mileage (MPG) Topic
foo.c replied to BringTheRain403's topic in 2014-2019 Engine, Driveline, & Exhaust
Drove down to Houston and back for some tuning via Blackbear. Set a new record on the way and just barely beat it on the way back. -
It looks better with 20 bags of mulch in the back. (I figure that's about 1000 lbs.) It levels out nicely. The weird thing is with tow/haul mode on and 20 bags of mulch in the back, I got 25 mpg on the way home. Just seems to hold V4 much longer.
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Stock Silverado 20" Polished Aluminum Wheels
foo.c replied to namanc6's topic in 2014 - 2019 Silverado & Sierra
I have a Texas Edition and my wheels are different.
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