I do have a custom tune. I was just curious about the benefits of going from e26 to e48. thanks though. that pretty much answers my question. back to lurk mode now...

From someone on MSF?

Open up a separate thread with a few logs and have people take a look. Plenty of people on this forum would be willing to help (especially if you donate).

Cheers

I wouldn't call going from E26 to E85 or even E48 a "marginal improvement in cooling."

Would you happen to have any data to back up your statement?

I'm not sure if he posts on this site or not. I never asked. im currently running 1gal E85-2.5gal93octane tune which I assumed is what you guys call a e26tune. just wondering if I can squeeze a bit more power up top safely since I am so close to my goal at the track.
thanks.

Lol that's E31 assuming E85 + E10 (pump 93)...Lowest would be E27 assuming you're getting fucked with winter blend + bare minimum E content.

We have an E85 section which has cheat sheets that break all the math down for you. I even made calculators.

well I'll be damned. that's the one sticky thread I didn't look at ugh. would I be wrong to assume then that going to a 50/50mix blend aka E48 would not be worth my time/effort/money if all I want is to make enough power to knock a couple more tenths off in the 1/4 mile? my goal is running a 12.99 or better in my bolt'd ko4 ms6. its becoming a lot harder a goal to achieve than I thought.

thanks for the help enki

One way to find out. All it costs you is time at the pump and a map flash.

there you go again with the common sense....

thanks again.