winter cold vs. summer heat

[yellowdemon327]

alrighty. thanks for the help guys. im gonna do some research, probably buy a high flow maf , and possibly get it retuned. maybe it has something to do with the truck being dyno tuned with 87 octane in the tank, but since then ive just run 93, because jannetty said the computer will adjust the timing automaticlly

[RedHeartbeat]

Yeah, you have to learn to bite the bullet on the fuel and only run the highest octane at the pumps. It only makes sense if you paid $500 to get performance from a tune, you gotta run the performance fuel to get the most from the tune otherwise you wasted $500.