E30 or 100 octane

[Juneyour619]

Quick question for y’all I found a gas station that has 100 octane gas but was wondering how it compares to a 91 E85 mix? I wanna move up to map 3 and try out 4 on my JB4

 

[Terry@BMS]

100 unleaded is probably better, but a lot more expensive!

 

[Juneyour619]

Thank's Terry that's what i figured, Don't really care about the price as long as it's more beneficial

 

[rpoffen]

When I track in Sacramento, there is a station a few miles from the track that sells 100. What map can I run if I get it close to pure 100 (1 gal or less 91, then fill with 100)?

 

[Juneyour619]

Looking at the map description's you can go all the way to map 5

 

[rpoffen]

Looking at the map description's you can go all the way to map 5

Cool, thanks.
For next year, I have an MBRP exhaust to put on, I have a BMS intercooler on order.

 

[Baluchitherium4]

Higher octane fuels over 93 around my part of the country are kind of scarce and very expensive.

I've been running just a little over 3 gallons of E85 with 93 octane on Map 3. The car runs great like this for me. I believe I could actually go to Map 4 with this because the knock on my logs running this way has either been 0 across the board or a .8 here or there.