Quote:
Originally Posted by BBHMM
Just curious, always interesting to learn something new 
So can run with more power without buying racing fuel (we have in Chicago 8$ per gallon 100octane)
Now is question how safe is that? Also can I mix it with 93octane without adding lpfp&hpfp and with my current st2 tune? |
With the proper supporting mods, its safe to run. From what I've read, E20 is about the max you can run with no supporting mods and not have a problem. I've done it before in mine but never data logged it so I can't confirm what my fuel trims looked like or if it gave me anymore power.
I've also read E30-E50 is about all you can run with a tune only. Anyone with more experience, feel free to correct that info.
I would contact your tuner and ask them to be 100% sure.
Here's a calculator to find out how much ethanol you need to mix to gasoline to get the right mixture. Remember, most pump gas is already E10 (at least in California)
http://www.wallaceracing.com/ethanol-mix-calc.php