What settings do you guys use for the tuning. 87 or 93 octane or do you just leave it to the factory settings. I heard some guy with a camaro say he lost 6 rwhp with 93 oct tuning. Right now mine is on 87 oct tuning and it feels pretty good.

 

ah no you should have it at 93oct. if i am correct by setting your octane level higher will tell the computer to advance you timing. it also might depend on the altitude. i can tell a huge difference between 87 and 93. if you go 87 it's better than nothing and you save money on gas. IMO

 

the 93 will advance your timing a little more than the 87. the main thing with the hpp3 is the setpoints of the other variables.