[232-K7]

Originally Posted by muststang

ok but what i want to be sure is that when i have installed the 93 octane diablo tune, and i want to reduce the timming i go into the fatory hp tune and i modify it but if i install it , it will not erase the 93 oct. tune for the 87? (because the factory hp tune is the 87 oct. tune) ?? thanks for help!

Originally Posted by 232-K7

you can modify the performance tune. choose Performance Tune, choose Modify Tune, retard the timing 2 degrees at 2K-4K and also at 4K-7K, and then install the Performance Tune.
then you can run 91 octane fuel without worries.

a good rule of thumb is that every increase in octane rating you use, you can safely add 1 degree of timing.

you don't need to go into Factory HP tune, just modify the Performance Tune. that's a step-by-step of how to do it.

[muststang]

but where ? its only into the factory hp tune that have the fonction of modify a tune : into the performance tune there is diablo tune, factory hp tune and original backup, when you choose diablo tune there no way to modify it ?? thanks for help

[016erstang]

How long ago did you get it if you can or able to get the connection piece for the computer and get the new updates for it. it will be able to give you the option of the 87,93 or modify stock settings. You should be able to modify the performance tune when it ask to install should be a option to modify parameters.

[muststang]

ok i see now where it is! thanks alot for help!