Quote Originally Posted by petemac110 View Post
Very nice! Are you simply running a bit of E85 on top of the usual 98RON for detonation resistance and minimising pulled timing, or is your tune specifically an E30 tune and you're after a visual indication of the ethanol ratio without going down the road of a flex-fuel sensor and associated tune?

I run a splash of E85 in my Stage 1 Passat 206TSI most of the time now, as whilst my tune isn't specifically set up for it, it simply loves an ethanol content of around E15-E20 with adequate fuelling system headroom and O2 sensor feedback to hit target AFRs. The torque delivery is FAR nicer with a bit of corn juice in there, particularly in hot weather.
I’m running integrated engineering’s specific e30 tune, the gauge is more for peace of mind, I didn’t feel comfortable constantly having the run the tank to near empty to make sure the blend I was putting in was accurate. I’d love to be able to run a proper flex fuel tune but IE don’t currently offer it outside of the United States, so I’d have to pay to get it tuned by a different company.
It’s interesting to hear that you can run up to e20 without being tuned for it though


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