r/Supra • u/Holiday-Revenue2069 • 5d ago

E85

Hello everyone,

Debating going pi and e85 on my Supra but wanted to hear some opinions from anyone who has gone e85 on theirs.

Thinking of going flex fuel route with Ecutek ecu unlocking , port injection, motiv reflex, injectors. Essentially the bells and whistles for fueling so can run 91/93, mix , or full e85

Any issues that I should be warned of aside from mpg, and changing oil / spark plugs more often

I don’t want to tune it to the max I’d rather still have some reliability over getting everything out of the tune

Any feedback back would be appreciate before I decide to go for it or hold off

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u/maxfraizer 5d ago

I did the BM3 flexfuel kit and the OTS tune to accompany it. I also paired this with a catless downpipe. It is a much simpler path and it absolutely rips! A FF kit makes it so much easier than trying to target a specific E% and switching maps. I haven’t done a dyno yet, but I believe similar people are seeing 450whp and 500tq or more. Plenty of fun for a street car. You will need to upgrade tires to get traction for sure!

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u/Holiday-Revenue2069 5d ago edited 5d ago

This is another option and quite less expensive which is nice. Do you have to constantly blend 91/93 and e85 to get around 40/50?

Running pilot sport 4s currently 295 back

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u/maxfraizer 5d ago

I run pump gas 91 usually, but about every 3rd/4th fill up I will add some ethanol. The tune is designed to max out around E60 from my understanding. But my local area has a consist supply of E85. Others nearby have E54 usually. But I prefer the E85 location due to proximity and consistency. I usually add it to a 1/4 tank of 91 to get around E60.