[InstigatorX]

How is everyone running E30 or even E85 (assuming a tune) in the USA if E85 at the pump has a range of ethanol content?

https://en.m.wikipedia.org/wiki/E85

[G.Newt]

You bring a tester then do the math based off that.

[InstigatorX]

Originally Posted by G.Newt

You bring a tester then do the math based off that.

Feels like a lot of work. 😫

[rahlow]

Originally Posted by InstigatorX

Feels like a lot of work. 😫

To be honest. I have the MP 2.5 tune. If used as low as E20 and as high as E40 once. Usually I'm E30 seems the sweet spot. I've never measured the content or don't anything more than pumping ethanol then 93. Never thrown a cell and the car has never felt funny on me either afterwards. If u want to measure that's great and gives u piece of mind and all but u will be fine regardless. Just don't go higher than 4 gallons I'd say and I wouldn't do that much on a daily basis but that's just me.

[JD11937]

Running e30 tune, it's certainly extra work but you get used to it pretty quickly. I try to go to the same station for consistency and test the ethanol about twice a month. I have the fuel-it test kit but you can find many options online. You can also use an ethanol calculator online, I use this one: https://adamtuned.myshopify.com/pages/tuning-tools

I generally aim for 30-35% ethanol.

My car runs so much better on e30, once I experienced it was no going back.

[GT500R]

Originally Posted by rahlow

To be honest. I have the MP 2.5 tune. If used as low as E20 and as high as E40 once. Usually I'm E30 seems the sweet spot. I've never measured the content or don't anything more than pumping ethanol then 93. Never thrown a cell and the car has never felt funny on me either afterwards. If u want to measure that's great and gives u piece of mind and all but u will be fine regardless. Just don't go higher than 4 gallons I'd say and I wouldn't do that much on a daily basis but that's just me.

I too run E on the MP tune. You should check the content of E, I regularly check every time and this last one was E65 after testing. I just did E20 and she pulls well (3.92 to 60 mph corrected with nothing more then a tune).

I might try E25 but too much E caused fuel cut for me one time.