Changing fuel Octane

[I370]

I been searching for a while. I just got my tuner in and I'm ready to make a few changes. How could I go by upgrading my fuel to 89 or 93? Thanks in advance. Be easy I'm a newbie to this thing!

[canadianguy]

i'm not sure I understand your question.

You can't give a specific answer to how much power or how much timing can I run on XXoctane gas. It depends on the setup and the tuning.

You can run as much timing as you can until you start seeing detonation on a specific octane gas, once you start detonating, its time to pull timing or increase the octane rating of the fuel.

[RCSBcolo]

run through a full tank of the gas you want to use, then refill, then tune the timing tables and watch for knock retard.

[I370]

Thanks. That's what I was looking for.