I know what you mean, I'm just busting your *****. E100 isn't 100% ethanol.

 

Its 100% not gasoline. Which is all I care about.

 

It is 100% of ALLOFIT!!!!

 

 

Now we're talking!

I might install a flex fuel one day, we'll see. The big problem for me is I can't run on pure gasoline at 28 PSI without detonation, and the amount of timing I have to pull to keep it from detonating is unacceptable from an EGT standpoint. So all I could really use it for is to compensate for different E85 blends, but so far in TX, I haven't noticed any change so far. E70 is the minimum here, so maybe it's not enough difference to notice.

 

coldside wastegate with EBC. Blend boost by ethanol percentage.

 

Sounds dumb, but probably the only legit way to actually make it driveable in boost on pump gas. So I guess, not dumb?

 

I wasn't really kidding. Ive seen emilio mention it before, and seen it done in a few random places online. And its actually quite simple, and mechanical.

 

Funny part is the "hardware" to do this is already on the car and being used as a bypass valve to cool the SC when not in boost.

But I'll probably never do this, just keep it on E85.

 

For some reason the wastegate is supposed to be as close to the intake as possible. Even on the actual intake mani if possible.

 

Subbed for more info. I just installed one of these also.
I bought this tester:
One Tester to Check Your E85 and Gasoline Fuel for Ethanol Levels | eBay
You guys probably have seen this stuff already, but here it is anyway.
Megasquirt Support Forum (MSEXTRA) ? Set up Continental Flex Fuel Sensor 13577394 (View topic)
and
Flex Fuel with MegaSquirt

 

Don't use the megamanual. It's not for the msextra codebase.

 

My bad, as usual I know just enough to be dangerous.

 

Other link is good

I have another flex fuel thread with links to Miata maps with flex blending.

 

I don't have a flex fuel gauge yet and I'm about to dyno tune my car. I got a fuel sample test kit to know how much ethanol my "e85" has. If it's low on ethanol, let's say 75% and I tune for that, my understanding is that it will be safer in the summer when I get true e85. Yes, I may not extract it's full potential but it should be safe, right?

 

Thread from the dead, but potentially relevant

I installed the Continental long tube sensor part number 13577394 and also had readings of ~35% on E10. I bumped around the google, and it sounds like several people have gotten very similar readings from this sensor out of the box. We have measured ~75Hz with air, ~85Hz on what may be E10 pump gas, and around 150Hz on whatever blend our e85 actually is. I took it a step further and ran water through it, 190Hz.

It seems getting one that provides the typical 50-150Hz range is a bit hit and miss. I will be putting some E0 through this one sometime here soon, as well as possibly some 70% ethanol water.

I will also be ordering another sensor. This one was sold as new Continental Branded, but it came from China, so I bet it is counterfeit.

 

Thanks guys for all your input i replaced my flex fuel sensor with another one and it reads correctly. enjoying my summer with a bit of corn