[apdanos]

I am currently running the canned 93 performance tune while awaiting my custom 87 performance tune. I do not do much towing, but if I do, would I be able to program the truck to the canned 87 towing and increase the timing to +3 since I will be running 93 octane?

[JackandJanet]

If you have 93 octane gas in the tank, you SHOULD be able to increase the timing if you are using the tow tune. (Notice I'm not saying to tow using a 93 octane Performance tune.)

But, because of the "load" on the vehicle, I don't think I'd simply advance the timing by +3. I think I'd start with +2 at first and see how it goes. Then maybe +2.5, +2.75, and finally +3.0.

I can't tell you what to look for here, because I have not tried it. But, if you experience any "discontinuous" performance or obvious bad behavior when you change something, it's a sign you've gone too far.

- Jack

[apdanos]

Thank you for the response.