How to run E85 on stock 86 BRZ FRS with OFT tune

[FRSBRZGT86FAN]

Originally Posted by Robbierayy1

Thanks man! Would the 10w-30 oil be better for my car than a 5w-30 under higher loads? I sometimes accelerate aggressively and sometimes go wide open throttle!

It doesn't effect load in that manner beat on it all you want.

[Jesxse]

Does anyone know what yellow gas cap fits the BRZ? I’d like a replacement for when I run E85

[Victorscp]

how do you monitor fuel trims if you are using the tactrix cable?

[ermax]

Originally Posted by Victorscp

how do you monitor fuel trims if you are using the tactrix cable?

You could log over USB to a laptop in real time. Or get a $10 BT OBD2 adapter to watch the trims. You really only need to watch the trims when first switching to E85 though. After that you just fill up and go.

[palanza87]

Hello, so I bought a used 13 FRS about two years ago and just now realized it came with this openflash reader. So I got the software manager installed and its connected to my computer, loading all of the info. I guess my main question is, how would I find out what tune is installed on the car? I think I can figure out how to get the e-85 tune going for the mods installed but I'd like to make sure I know which is which.

[steve99]

Originally Posted by palanza87

Hello, so I bought a used 13 FRS about two years ago and just now realized it came with this openflash reader. So I got the software manager installed and its connected to my computer, loading all of the info. I guess my main question is, how would I find out what tune is installed on the car? I think I can figure out how to get the e-85 tune going for the mods installed but I'd like to make sure I know which is which.

Assuming the tablet is married to car amd car has not beeen flashed with a different device. Plig tablet into car go to tuning then theor should be an asterix * next to the tune currently in vehicle

[Pizzachicken]

If you guys don't mind checking out my data to make sure everything is looking good. I've read through all 50+ pages of comments, and my logs look almost as expected except for a couple concerns. This is on first tank of e85 (filled 11.2 gal) and have driven far past the recommended range before doing my first pulls.

LTFT should be +- 10% throughout, at one point I did have it jump up to 11.72% ~700rpm, not sure what that's about. And my LTFT has never dips under -0.78. I average around 4.5%

WOT AFR should see 12's is what I gathered, but when past 6krpm it goes into 11's, 11.25 was at redline.

This is off the stock OFT tune, as I wouldn't know how to adjust values and prefer not to touch that. Do these conditions look good to proceed and enjoy? Thanks

https://datazap.me/u/pizzachicken/61...data=1-9-11-13
https://datazap.me/u/pizzachicken/61...=1-2-4-9-11-13

[tomm.brz]

it would benefit a little maf scaling, but doesn t look so bad, you can drive like that no worries, looks solid

[Pizzachicken]

Originally Posted by tomm.brz

it would benefit a little maf scaling, but doesn t look so bad, you can drive like that no worries, looks solid

Great. I was just wondering if there's any reason for my numbers to be slightly off from what others have suggested, and if it's normal for LTFT to be +11 even if briefly. Otherwise, what should I do with MAF scaling? By "benefit" would that mean making it safer for the engine?

[tomm.brz]

it doesnt look off, and it seems safe
maf scaling will bring smoother overall and bit more power apparently since it seems rich in spots during the pull for e85, but not so relevant, you could avoid
if you send me the tune i ll adjust a bit for you

[Pizzachicken]

Originally Posted by tomm.brz

it doesnt look off, and it seems safe
maf scaling will bring smoother overall and bit more power apparently since it seems rich in spots during the pull for e85, but not so relevant, you could avoid
if you send me the tune i ll adjust a bit for you

Ok attached my file, it's just the one directly from OFT. I appreciate it. It'll be okay to make adjustments off this data given it's still my first tank and the possibility of varying e% in future fill ups?

[Collin Long]

What exactly does this change when changing the Fuel Display Offset Multiplier? and why doesn't this come with the tune?

[Purist]

Originally Posted by Collin Long

What exactly does this change when changing the Fuel Display Offset Multiplier? and why doesn't this come with the tune?

Hey mate I'm only answering because no one else has. I'm no expert. I think this adjusts the display so it displays fuel usage correctly. E85 gets used at 25% higher rate.

Sent from my SM-G973F using Tapatalk

[Collin Long]

Originally Posted by Purist

Hey mate I'm only answering because no one else has. I'm no expert. I think this adjusts the display so it displays fuel usage correctly. E85 gets used at 25% higher rate.

Sent from my SM-G973F using Tapatalk

Thank you! I had guessed that is what it was but wasn't 100%