Yes. The flex fuel kit just simplifies the flashing/map switching process.

If you just want to run straight E85, you don't need a flexfuel kit. All you need is an E85 tune. Ours is free :)

Shiv

Shiv, I'm really excited about the release of your E85 maps and I found a gas station 5 miles from my place of work that sells it so I'm set there. I do have one question though. IF someone did want the ability to a flex fuel kit in their car so they could swap between 93 and E85 without reflashing, is this something that the OFT can or will support in the future? I'm not sure how the other two flex fuel kits are accomplishing this, but the general idea that I get is they just re purpose a sensor to the ECU for the flex fuel sensor with ECUTek?

Either way, I'm going to most likely run your map after its released to get an idea of mileage with the car on E85. I'd just hate to have to reflash the car each time I go to places that don't have E85 available.

If you don't have live map switching you will need to reflash every time. With the ecutek tune I have my pump gas on one map and E85 on another.

How cold do E85 starts begin having issues?

We have seen early morning temps (in NorCal) as cold as 45F and no cold start issues. The cranking enrichment table did have to be revised to make this possible. With the stock cranking enrichment table values, the car would stall at the first and second starting attempt :)

Shiv

It was 45 here in Texas yesterday. It refused to start. I had to try 8 times and give it gas before it would fire up. E75. Anywhere under E65 and it cold starts fine, but I was trying to keep the ethanol high because I have a track day tomorrow.

You'll need to revised the cranking enrichment table. I'm running up to E85 and no issues in cold mornings.

Shiv, I sent you a PM, just so you know. Thanks for all the replies!

I initially ran E85 only 60-70% of the time (fillups) my first few months on the E85 tune... after that, I've been on it 90%+ of the time. :D

Since mid-May, I've had 58 top-offs & 3 partial fillups.. I've only put in 93 octane 4 times during that span (2 times were partial 93 fillups): 2 times in June, once in mid October, and once again 3 weeks ago.

I'd be interested to see how your injectors look Hawaiian.

The hard startups during cold mornings aren't enough to get me off the corn juice... yet. I'll wait to see how difficult the startups get when temps drop to below 40F first.

Any updates on the potential injector clogging issue? If running E10/E0 gasoline does clean up deposits, how often should it be done?

@Hawaiian @reeves @CaptainSlow @post_break @mikalem @shiv@vishnu

The following thread discusses decreasing the throttle relearn time for those flashing back and forth. I've found the 5x pedal down then on trick worked (post #13). Wasn't the only thing I tried after a new map though. I didn't try steve's method yet.

http://www.ft86club.com/forums/showthread.php?t=39480

I've never tried the 5x pedal down method after reflashing. I just drive normally afterwards, the 2 times I've actually had to reflash. I haven't taken my injectors out yet either.. I'll probably replace them at the end of this year when I get close to 60K miles, then we'll see how "clogged" they are. I haven't had any issues so far though.

I have not had any issues, but I am running a few weeks on E85, then a week or so on 93...just based on my schedule. I like to switch back to 93 if I have a longer road trip, just because there aren't too many E85 stations around our state, and I don't want to be stranded.

Every 5 tanks of E85 run a full tank of E10. No clogging.