be happy you have 9r10. i dont care for any tune after 9r17, they make the truck feel very sliggish. and once you do 9r17, you cant go back to previous croms.

I have a 2010 sierra with a 5.3 flex fuel. I used the diablo tune when I was using e85. It was the fastest the truck has ever ran with no knock retard. I went from 16 mpg with 87 octane gas with the 87 octane tune to 11 mpg using e85 with the diablotune.

yes i used 87 oct. the mpg booster tune is designed for use with 87 octane

i went from the 87 octane tune to mpg booster and fuel economy along with performance are worse. and dont even bother trying to tow anything. i went from 10mpg to 6mpg towing the same rv to the same destination as i always did. back to 9r19 with 87 octane tune for me.

does the mpg booster tune have less performance than a stock tune. is the throttle delay still elininated like in the diablotune

what do you mean by canned tunes? previous tunes before 9r23. i would agree if it was pre 9r19 tunes. ds said they didnt change anything after 9r18 tunewise but i dont agree. my truck felt way more responsive when i had 9r16. bad part is you cany go back to any pre-9r19 tunes once you update. im ...

from my understanding this tool only eliminates tm on the engine side....unless something changed in 9r23.

something must have changed with torque management then because it seems like once i hit 3rd gear truck falls on its face.. seems like torque converter wants to contantly lock up

how do i get rid of 9r22 and go back to 9r18. i tried going back to 9r19 and then to 9r18 but it still gives me the cant dowload past 9r19. truck seems to shift way too soon and poor performance with 9r22. using diablotune

same problem here..i have 9r18 now and tried 9r20..tuner says cant downgrade 9r16 to 9r20..

is this predator ok to use on a flex fuel..if so can i just switch to e85 or do i have to go back to the stock tune instead of the 87oct

by going +10 i believe i made it run richer. i outside ends of my exhaust tips have some carbon on them...never had it before..is it normal or is it too rich

does outside air temp make a big difference in logging. i know one log was done around 40 degrees and another around 60 degrees. also with the 6speed is it best to log between 1800-1900 rpm in 5th gear

here is a log on the same road with +10 on inj. slope

went back to stock..put on about 100 miles. logged the stock tune using the pids you specified. do the maf reading look ok. its installed with the arrow pointing towards the engine which would be right.