E85 Stats
 

Being it is now 2022 and about 10 years since these cars first came out, I'm curious if we can all share your current vehicle mileage and how many of it were running on E85 fuel. Here is mine:

Year: 2017
Mileage: 42,000 miles
E85: 19,800 miles

Also, does anyone else notice that there is less low end grunt/torque on e85 compared to gas? Or is it just me. I am using off the shelf OFT tunes.

Year: 2014
Mileage: 120,500 miles
E85: >30,000 miles


No issues with E85. Oil analyses have always come back good. Going to do another spark plug change soon, and will get an idea of what they look like compared to full 91.



E85 has better throttle response and low end torque compared to 91. Flex fuel tuned on Ecutek

Pretty early for me

2016 MY15
50000kms
12000kms on e85.

Found out the importance of e85 quality the other day. I’ve always filled up at the same station but had to fill up at another station (still under the same brand). That e85 quality made the car feel extremely sluggish and exhaust sound a lot louder. As soon as I refilled 3/4 of a tank at my usual station my ride quality went back to normal

Less torque?

Why are you using e85 if that's the case?

2017 toyota 86 60k miles

using e85 for approx 2.5 years 35k miles. Half of that full e85 on oft, half on ecutek flexfuel.

I saw better low end torque on E85.
2017, Ecutek, Delicious flex fuel tune.
35k total miles
32k on E85, over 90% of the time.
30k boosted

Year: 2013
Mileage: 55,000 miles
E85: 10,000 miles

Running with OFT e85 UEL header tune and super happy with the low end torque and torque dip delete.

Year: 2018
Mileage: 45K
E85: 16K

No problems, drives amazing and smooth. Flex-fuel Ecutek tuned with several revisions for a little extra perfection.

Unless your tune is not well optimized, it may be an odd feel you have for the way the car now accelerates. One of the things I noticed is when I'm not running E85, The pull post 3.5-4K RPM is very strong and really makes the car feel like it's coming alive. This sensation kind of goes away when I'm running on ethanol. I think much of this is due to the change of the curve, with the lower end torque actually being quite a bit stronger, making the overall torque more even. This "evenness" doesn't give the stronger pull sensation, but rather a more simple acceleration feeling. Regardless, the car is much quicker throughout the full rev range on E85, but the feel of acceleration differs for sure and in some way it bugs me a little too. When going back to 93, I enjoy the feel of the pull post 3.5K RPM. E85 just doesn't have that same feeling as it is already pulling pretty good from lower RPM's.

That's just my thought on that. Again, it may also be that your tune isn't quite up to par, and of course, your tune could be optimized differently in general. I'm not too familiar with how well OFT's tune is on E85, but judging by the dyno pulls I've seen from OFT, it seems pretty good.

For some reason it feels that way when leaving from a stop to about 2.5-3k rpm, but I may be wrong. Maybe since I have EL headers.

I'd really like to know your thoughts though regarding the ecutek custom tune compared to oft, did it make any significant differences and worth the extra investment if one is already on OFT e85?

I have in the past also noticed that e85 doesn't give that sudden punch in acceleration once I hit 4.5k rpm. When on the stock tune, it almost feels like vtec kicks in at that point lol.

E85 probably does pull harder at lower rpms, but for some reason gas feels like it has more grunt from a stop to me. Could be because E85 tune is smoother giving me the impression that it is not pulling as hard. Going to test it again on my next tank.

I'm also assuming OFT tunes are geared towards UEL headers, which could explain what I feel since I have Tomei EL headers. Might consider ecutek if it wasn't for California's new law that requires stock tune for SMOG.:mad0260:

I honestly don't think the difference is worth it. Being able to run flex is nice (you can flex on oft as well, but it's more of a pain and you'll need a custom tune) and I'm planning on turboing soon so it was worthwhile.

I would doubt your tune for UEL is bad enough that with EL you have any kind of losses at any point in the curve. It's certainly not optimal, but you probably still have a pretty good looking torque curve overall, and so I would bet you are experiencing exactly what you say - a smoother climb in acceleration which gives it less sensation of oomph in a sense.

OR:

Actual Dyno >>>>> Butt Dyno

Ecutek you can flash back to stock map just like OFT. Smogged my car no problem

I agree e85 probably feels underwhelming due to it removing the “NA lag” you’d encounter during the torque dip.

That said if you did a drag race against a stock/ UEL only car you’d see the performance increase e85 has:

Don’t know if it’s the same for you, but gas might feel like it has more grunt due to the change in exhaust tone.

For me after switching to e85 I noticed my exhaust was a lot more subdue. Sounded smoother compared to gas which would burble and sound louder.

I’m fully catless at the moment yet I still remember being more cautious of how loud my car was (when avoiding police) when I was on gas with my stock front pipe. Even if I rev up to 5k and let off I get no burbles

Agree 100%. I just switched back to the Oft e85 tune yesterday and was surprised at how much smoother the exhaust note is compared to gasoline tune and revving it in my garage is noticeably quieter.

it s mostly cause of more advanced ignition timing
it tames the deepening of the sound while increasing power

For any of you that is using OTS E85 tunes... You still have a lot of headroom everywhere if you only were using custom refined tune

So there's still potential for OTS users to get more out of the tune? Is that something a local shop could do? Or should we reach out to Openflash directly?

yes, but don t waste time with Shiv, steve99 or Wayne are better

i can also modify it for you, up to you

Hello everyone,

I’m the second owner of the 2014 BRZ and bought it at 70k. Before me it was only run on 91; however, I switched to corn at 72k and ran it exclusively on the OFT Stage2+e85 map (no flex fuel). I did not notice any power losses and was able to take the car to official drag races down at Race Legal in Qualcomm Stadium; although I can’t remember my specific time, I did win 1st place street stock (I beat a V6 mustang by the smallest margin possible). At roughly 87k I added a sprintex supercharger and went with an ecutek flex tune from Mike over at Moto-East/Xero Limit; I still haven’t ran 91 as I’ve only been on e85 and I am now at 118k and going. If it helps, I change my oil (Schaffers) every 3k and switch between 0w20 in the winter/colder months and 0w40 in the summer/hotter months; I occasionally (like once a month if I remember) run a serving of the lucas oil e85 conditioner/stabilizer to hopefully prevent the fuel system from being gummed up as some people claim may happen. The vehicle is used for everything if anyone is curious (daily, track, autocross)

To summarize:
72k on 91
15k on e85 NA
31K on e85 boosted
Total: 118k on stock block with 72k on 91 and 46k on e85
I have attached the link for the product I use

https://www.autozone.com/fuel-and-en...E&gclsrc=aw.ds

Just curious, has anyone running flex fuel with forced induction in a CARB-compliant state successfully passed emissions?

Not gonna happen ever :bonk:

So why not? Is it because a tuned, forced induction FA20 will produce more emissions and therefore it would exceed allowable amounts or because the emissions would be so much lower than the test would "expect" to see and fails because the assumption is that something else must be wrong to result in lower numbers. I'm not trying to be argumentative, I literally just don't know. I'm going on the high-level assumption that using flex fuel = lower emissions, but I have no idea how forced induction affects that assumption in practice.

Carb only applies to CA. CARB=California Air Resource Board. I do our emissions certifications at work. For carb it would have to be a carb certified setup. So unless the manufacturer is going to pay for the testing($$$) and apply for the cert there isn't such a thing. It would also be a locked tune due to that.

The only way to know in your area is to run the car at an emission test facility and see if it passes.

hypothetically doable if you have "a guy" and $$$ to potentially spend

I think you will need to add some more $ to that to get done.

2014. 55,000 miles. About 15,000 on E85. Borla header, Berk free-flow cat front pipe, Phantom electric supercharger (Switched off right now till I can find the boost leak.) Strong, linear pull through the full torque range. Significant improvement over stock.