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Considering there aren't any DTCs...
1) Are you using the average mpg PID?
2) You can soften the shifts but please read the manual and have a firm understanding of what the change does to create the softened feel.
3) How are the RPMs? If you have the quiet stock exhaust and they are within a few hundred the sounds will be very similar. I know my truck sounded similar for any rpm comparison within about 500 just because of how quiet it was.
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The MPG on the programmer is 1.2 less than what I get when I average them myself.
I will definitely do some reading tomorrow. Just scares me because when it happens it feels just like when you are driving stick and you accidently put it into 3rd when trying to get into 5th. Dont have that problem at all without the gryphon.
With the noise, stock exhaust and same concern as above. Doesn't sound like the same truck without the programmer. Can clearly hear it climbing and going through gears when at stock.