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Old 10-18-2021, 12:58 AM   #729
kennwin
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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
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Old 10-18-2021, 04:24 PM   #730
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Originally Posted by kennwin View Post
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?

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Old 10-18-2021, 07:18 PM   #731
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What tune do you have?

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Running on the Stage2PlusE85 V4 canned tune, verified that I am on the tune.
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Old 10-18-2021, 07:39 PM   #732
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Can't help you man. Steve99 is a guru at this stuff.

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Old 10-19-2021, 02:35 AM   #733
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Originally Posted by kennwin View Post
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
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Old 10-19-2021, 05:45 PM   #734
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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.
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Old 10-22-2021, 04:43 AM   #735
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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.

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Old 10-30-2021, 07:32 PM   #736
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Are you in Oz? United E85 is super reliable.never had an issue. Ever.

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I am in california
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Old 10-30-2021, 07:39 PM   #737
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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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Old 06-26-2022, 12:50 AM   #738
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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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Old 06-26-2022, 10:09 AM   #739
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Originally Posted by Samba86 View Post
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
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Old 06-26-2022, 06:36 PM   #740
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Quote:
Originally Posted by Samba86 View Post
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
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Old 06-26-2022, 09:51 PM   #741
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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
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Old 06-27-2022, 05:06 PM   #742
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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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