Diablosport Forums

I've been running my 2014 sierra 5.3L with the diablo flex tune for about 180 miles and was wandering what the LTFT %'s should be. Thanks in advance for the help.

you can't adjust part-throttle fueling anyway on the 2014's, since they're direct injection.. you'd need a custom tune to have the MAF sensor table scaled if you needed part-throttle fueling adjustment.. fuel trims will vary depending on intake air temp, engine load, throttle, etc.. they ideally should be anywhere between -5 to +5...

I did a log file cruising around town yesterday and viewed in the data viewer. My AFR is right at 14.75 steady and my fuel trims are well within +5 to -5. The only thing that DSlogredux told me to do was make a +2% injector slope adjustment. Any recommendations for that? I dont think it really needs it. The truck is running better than it ever has. Thanks for the input.

you can't use dslogredux man.. like I mentioned above, those new trucks are direct injection.. no injector slope.. so you can not make any part-throttle fueling adjustments.. so nothing for you to adjust..