How to run E85 on stock 86 BRZ FRS with OFT tune - Page 53 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

kennwin · 10-18-2021, 12:58 AM

Hey guys. Been reading up on this forum alot and similar threads that had high ltft. I seem to still not figure out why I have oddly positive LTFT up to 20% at times. My first tank of E85 ran great, but my second tank has thrown my different numbers where my IAT has been running insanely hot (sometimes like 30-40 degrees higher than ambient while just driving normally) and my LTFT has been increasing positively like crazy off throttle. Never ran above ±10%. Could someone check if my AFRs are okay? I have a data log under light throttle and cruising on the way home.

TRD intake, JDM TRD catback exhaust, rest is stock

https://datazap.me/u/kennwin/log-163...g=0&data=1-2-9

Purist · 10-18-2021, 04:24 PM

Quote:

Originally Posted by kennwin

Hey guys. Been reading up on this forum alot and similar threads that had high ltft. I seem to still not figure out why I have oddly positive LTFT up to 20% at times. My first tank of E85 ran great, but my second tank has thrown my different numbers where my IAT has been running insanely hot (sometimes like 30-40 degrees higher than ambient while just driving normally) and my LTFT has been increasing positively like crazy off throttle. Never ran above ±10%. Could someone check if my AFRs are okay? I have a data log under light throttle and cruising on the way home.

TRD intake, JDM TRD catback exhaust, rest is stock

https://datazap.me/u/kennwin/log-163...g=0&data=1-2-9

What tune do you have?

Sent from my SM-G973F using Tapatalk

kennwin · 10-18-2021, 07:18 PM

Quote:

Originally Posted by Purist

What tune do you have?

Sent from my SM-G973F using Tapatalk

Running on the Stage2PlusE85 V4 canned tune, verified that I am on the tune.

Purist · 10-18-2021, 07:39 PM

Can't help you man. Steve99 is a guru at this stuff.

Sent from my SM-G973F using Tapatalk

steve99 · 10-19-2021, 02:35 AM

Quote:

Originally Posted by kennwin

Hey guys. Been reading up on this forum alot and similar threads that had high ltft. I seem to still not figure out why I have oddly positive LTFT up to 20% at times. My first tank of E85 ran great, but my second tank has thrown my different numbers where my IAT has been running insanely hot (sometimes like 30-40 degrees higher than ambient while just driving normally) and my LTFT has been increasing positively like crazy off throttle. Never ran above ±10%. Could someone check if my AFRs are okay? I have a data log under light throttle and cruising on the way home.

TRD intake, JDM TRD catback exhaust, rest is stock

https://datazap.me/u/kennwin/log-163...g=0&data=1-2-9

IAT and MAF are in same sensor in intake, check the sensor os mounted correctly and the o ring isnt damaged , check plug is firmly in socket on maf\iat sensor

kennwin · 10-19-2021, 05:45 PM

Ran the car this morning, LTFT stabilized around +6%. Must have had weird fuel in the lines, but everything is running normal now. No codes, misfires, or knock. IAT is still hot compared to ambient, I'll have to look into that. MAF/IAT sensor was secured.

Purist · 10-22-2021, 04:43 AM

Quote:

Originally Posted by kennwin

Ran the car this morning, LTFT stabilized around +6%. Must have had weird fuel in the lines, but everything is running normal now. No codes, misfires, or knock. IAT is still hot compared to ambient, I'll have to look into that. MAF/IAT sensor was secured.

Are you in Oz? United E85 is super reliable.never had an issue. Ever.

Sent from my SM-G973F using Tapatalk

kennwin · 10-30-2021, 07:32 PM

Quote:

Originally Posted by Purist

Are you in Oz? United E85 is super reliable.never had an issue. Ever.

Sent from my SM-G973F using Tapatalk

I am in california

Purist · 10-30-2021, 07:39 PM

Quote:

Originally Posted by kennwin

I am in california

I'm sorry. Not to put to fine a point on it but the E85 here is guaranteed 85% and 107 octane. Spoilt huh.

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Samba86 · 06-26-2022, 12:50 AM

Just gone E85 and I thought I'd ask a few nooby questions (hoping Steve99 might chime in). Running 4.03 S2+ canned tune with United ethanol (only mod is a Tomei catless UEL). The engine feels so refined, and throttle response has improved greatly, but from the look of the exhaust tips I'm running quite rich.

I'm new to data logging, but here's a pic after a cold start (guessing I've done 150km on E85 so far.) I know a proper data record and upload will be needed, but am I looking ok so far?

https://i.ibb.co/PjgfS6n/IMG-7546.jpg

2. Steve, do you recommend I download the appropriate Wayne Rom and begin his process?

3. When in the live logging mode, the back button on my tablet doesn't respond. Normal?

4. Final one, there was talk about E85 compatible oil way back in this thread. For the Aussies among us, any recommendations?

Cheers, all. BTW, if there's a way to give back (patreon or the like) I'd appreciate if someone can point me in the right direction

Espi · 06-26-2022, 10:09 AM

Quote:

Originally Posted by Samba86

Just gone E85 and I thought I'd ask a few nooby questions (hoping Steve99 might chime in). Running 4.03 S2+ canned tune with United ethanol (only mod is a Tomei catless UEL). The engine feels so refined, and throttle response has improved greatly, but from the look of the exhaust tips I'm running quite rich.

I'm new to data logging, but here's a pic after a cold start (guessing I've done 150km on E85 so far.) I know a proper data record and upload will be needed, but am I looking ok so far?

https://i.ibb.co/PjgfS6n/IMG-7546.jpg

2. Steve, do you recommend I download the appropriate Wayne Rom and begin his process?

3. When in the live logging mode, the back button on my tablet doesn't respond. Normal?

4. Final one, there was talk about E85 compatible oil way back in this thread. For the Aussies among us, any recommendations?

Cheers, all. BTW, if there's a way to give back (patreon or the like) I'd appreciate if someone can point me in the right direction

You can get tunes from steve himself here
https://www.facebook.com/profile.php?id=100009796213855

I run 2 custom tunes one E85 and 93 for different times of the year both custom tuned by Steve99

cheers

steve99 · 06-26-2022, 06:36 PM

Quote:

Originally Posted by Samba86

Just gone E85 and I thought I'd ask a few nooby questions (hoping Steve99 might chime in). Running 4.03 S2+ canned tune with United ethanol (only mod is a Tomei catless UEL). The engine feels so refined, and throttle response has improved greatly, but from the look of the exhaust tips I'm running quite rich.

I'm new to data logging, but here's a pic after a cold start (guessing I've done 150km on E85 so far.) I know a proper data record and upload will be needed, but am I looking ok so far?

https://i.ibb.co/PjgfS6n/IMG-7546.jpg

2. Steve, do you recommend I download the appropriate Wayne Rom and begin his process?

3. When in the live logging mode, the back button on my tablet doesn't respond. Normal?

4. Final one, there was talk about E85 compatible oil way back in this thread. For the Aussies among us, any recommendations?

Cheers, all. BTW, if there's a way to give back (patreon or the like) I'd appreciate if someone can point me in the right direction

Can do custom tunes if needed

Oil run a SN or better rated full synthetic in warm Australia climate id go 5w30

Penrite Enviro full synthetic or Nulon long life you can get those at Autobarn or Supercheap auto

Samba86 · 06-26-2022, 09:51 PM

Quote:

Originally Posted by steve99

Can do custom tunes if needed

Oil run a SN or better rated full synthetic in warm Australia climate id go 5w30

Penrite Enviro full synthetic or Nulon long life you can get those at Autobarn or Supercheap auto

Thanks so much for the info, Steve. Appreciated

snivy666 · 06-27-2022, 05:06 PM

Hey yall, wanted to hear thoughts on running v4 stage 2+ e85 tune on stock headers? I’m worried about long-term usage of this catch-all tune.. the older canned tunes had EL-specific e85 tunes but the new v4 is for ALL headers, so I’m worried about whether its just not a good idea to use a tune not optimized for stock headers

10-18-2021, 12:58 AM	#729
kennwin Junior Member Join Date: Oct 2021 Drives: 2013 Scion FR-S 10 Series #832 Location: United States Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	odd LTFT Hey guys. Been reading up on this forum alot and similar threads that had high ltft. I seem to still not figure out why I have oddly positive LTFT up to 20% at times. My first tank of E85 ran great, but my second tank has thrown my different numbers where my IAT has been running insanely hot (sometimes like 30-40 degrees higher than ambient while just driving normally) and my LTFT has been increasing positively like crazy off throttle. Never ran above ±10%. Could someone check if my AFRs are okay? I have a data log under light throttle and cruising on the way home. TRD intake, JDM TRD catback exhaust, rest is stock https://datazap.me/u/kennwin/log-163...g=0&data=1-2-9

10-18-2021, 07:39 PM	#732
Purist Senior Member Join Date: May 2017 Drives: Subaru BRZ Location: Australia Posts: 349 Thanks: 125 Thanked 261 Times in 145 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Can't help you man. Steve99 is a guru at this stuff. Sent from my SM-G973F using Tapatalk __________________ Less More

06-26-2022, 12:50 AM	#738
Samba86 Member Join Date: May 2021 Drives: 86 GTS Location: Phillip Island Posts: 50 Thanks: 71 Thanked 73 Times in 30 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Just gone E85 and I thought I'd ask a few nooby questions (hoping Steve99 might chime in). Running 4.03 S2+ canned tune with United ethanol (only mod is a Tomei catless UEL). The engine feels so refined, and throttle response has improved greatly, but from the look of the exhaust tips I'm running quite rich. I'm new to data logging, but here's a pic after a cold start (guessing I've done 150km on E85 so far.) I know a proper data record and upload will be needed, but am I looking ok so far? https://i.ibb.co/PjgfS6n/IMG-7546.jpg 2. Steve, do you recommend I download the appropriate Wayne Rom and begin his process? 3. When in the live logging mode, the back button on my tablet doesn't respond. Normal? 4. Final one, there was talk about E85 compatible oil way back in this thread. For the Aussies among us, any recommendations? Cheers, all. BTW, if there's a way to give back (patreon or the like) I'd appreciate if someone can point me in the right direction Last edited by Samba86; 06-26-2022 at 01:08 AM.

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10-19-2021, 05:45 PM	#734
kennwin Junior Member Join Date: Oct 2021 Drives: 2013 Scion FR-S 10 Series #832 Location: United States Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Ran the car this morning, LTFT stabilized around +6%. Must have had weird fuel in the lines, but everything is running normal now. No codes, misfires, or knock. IAT is still hot compared to ambient, I'll have to look into that. MAF/IAT sensor was secured.

06-27-2022, 05:06 PM	#742
snivy666 Junior Member Join Date: Nov 2021 Drives: '16 FR-S Location: SF Bay Area Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hey yall, wanted to hear thoughts on running v4 stage 2+ e85 tune on stock headers? I’m worried about long-term usage of this catch-all tune.. the older canned tunes had EL-specific e85 tunes but the new v4 is for ALL headers, so I’m worried about whether its just not a good idea to use a tune not optimized for stock headers

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