[4cylenjoyer]

Question/ Help
I have a g20 330i 2019, and a turbo transformer I want to run at the +3psi setting. Would it be safe to run an e-30mix like they recommend for a jb4? I know in my owner manual it states “fuels with a maximum ethanaol content of 25% i.e e10 or e25 may be used for refueling.” I was mostly wondering if this would make the mod safer, as I live in California (socal) and the 91 premium gas isnt very good. Or would I need a flex fuel kit to run mixes?

[4cylenjoyer]

Also if this is feasible on stock hardware, what would be the pros and cons??

[VipinLJ]

Upto E25 and you'll be fine. Most cars can do E30 (mine can't but then, my car isn't like other G20s around (not in a good way)). It'll help with fixing timing drops. If you can get logs, that would be perfect.

[mike@x-ph.com]

E30 is safe but unless you are tuning the car to take advantage of the higher octane, its not worth the hassle.

[4cylenjoyer]

Originally Posted by mike@x-ph.com

E30 is safe but unless you are tuning the car to take advantage of the higher octane, its not worth the hassle.

So 91 pump gas from
California should be safe with extra boost? No need to calculate mixtures, it does seem like a hassle after some research lol.

[mike@x-ph.com]

Originally Posted by 4cylenjoyer

So 91 pump gas from
California should be safe with extra boost? No need to calculate mixtures, it does seem like a hassle after some research lol.

Target E25, and you are safe. You will be between E20 and E30, both safe limits.

As you said, its a hassle, and if you are not tuned for it with a Jb4 or flash tune, its a waste of time.