HF tune

[justram2013]

was wondering if anyone can help. first off i have a hf 89 octane tune on my truck. i put the truck back to stock and to be honest didnt notice much of a difference at all. second i reinstalled the HF tune and tried to disable traction control but it says traction control failed to update. am i doing something wrong? and all the people saying what a difference HF tune makes, really?

 

[xrsman]

I installed the canned tune first. Drove to the gas station and filled it full with 91 when it was about 20 kms to empty. Then installed the 91 canned tune and noticed a bit of a difference. Once I got my final tune from Sean (91 octane is what I use) it took a few days but all of the sudden it's like the trucks balls dropped a nd I could notice a nice difference! My in town mpg went up too!