Definitely need a real alcohol sensor to run E85 (which is usually e70)..it is in no way a scam. it is 100 plus octane race gas at the local gas station for less than 93 piss water petrol.
the 6.2 engines love it, it also cleans the top of pistons. now gm didn't spend the money to install a physical sensor on these trucks and trys to do the math off the reg o2 sensors which is mostly a failure. but that's not e85's fault.
just because you don't own a car that can take full advantage of e85, I hate seeing people shit on it. anyone with boost and a flex fuel sensor it's a god send.now if we would. remove the tariff on it and just sell it at the price Brazil sells it to us we would be set.
These virtual fuel sensors that just use the O2's are so bad... I always reset
them whenever I'm doing work as they are usually very wrong
I was thinking about getting a real alch sensor on mine so I could run E every
once in a while to clean things up a bit. But overall I'm not a huge fan of ethanol,
but the turbo guys love it due to it's octane rating