How cold is too cold for E85? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

smg1138 · 10-18-2015, 09:40 PM

I have an OFT and was running Stage 2 UEL E85 tune a while back. However, when the temps starting dipping into the 50's I started getting some cold start issues. I'd have to crank it a couple of times and once it acted really weird on warmup with the throttle going all over the place. That kind of freaked me out, so I switched back to 93. The extra power from E85 was really nice, but I'm worried to keep running it now. What do you guys do when it starts to get cold?

jawn · 10-18-2015, 09:46 PM

Looks like there's a tune tweak to get it to fire while pretty cold (21F).
http://www.ft86club.com/forums/showp...1&postcount=40

Or you can switch to 93 for the winter. A lot of folks I know do.

steve99 · 10-18-2015, 09:58 PM

Quote:

Originally Posted by smg1138

I have an OFT and was running Stage 2 UEL E85 tune a while back. However, when the temps starting dipping into the 50's I started getting some cold start issues. I'd have to crank it a couple of times and once it acted really weird on warmup with the throttle going all over the place. That kind of freaked me out, so I switched back to 93. The extra power from E85 was really nice, but I'm worried to keep running it now. What do you guys do when it starts to get cold?

I would use @Waynos cranking tables here

in this post
http://www.ft86club.com/forums/showthread.php?t=83945

if you still have problems when its rearly cold add a gallon of petrol as well

Abe1120 · 10-18-2015, 10:49 PM

its been getting pretty cold around here in illinois ive seen frost in the morning when i go to start my car up for work and i havnt had any trouble with any start ups yet. any reason why?

steve99 · 10-18-2015, 11:03 PM

Quote:

Originally Posted by Abe1120

its been getting pretty cold around here in illinois ive seen frost in the morning when i go to start my car up for work and i havnt had any trouble with any start ups yet. any reason why?

depends a lot on E% if you have high E5 like us E90, then you get start problems pretty early on standard oft crank tables.

If your arround E70 you will be pretty good down to about 40-50F.

if you mod the crank tables as per wayno post then you will be good even in cold temps on E70

EAGLE5 · 10-18-2015, 11:47 PM

I made some mods to my startup tables and could get it going in 40F with one or two turns of the key. That was with Propel e85, which seemed to be actual e85. With a gallon or two of 91, you should have little trouble with the OFT tune.

smg1138 · 10-19-2015, 01:20 AM

Quote:

Originally Posted by steve99

I would use @Waynos cranking tables here

in this post
http://www.ft86club.com/forums/showthread.php?t=83945

if you still have problems when its rearly cold add a gallon of petrol as well

Sorry, dumb question. Can I use the BIN's in Wayno's zip file directly or do they need to be edited in Romraider first?

trdric · 10-19-2015, 02:05 AM

I was able to start the car at -10 C last year without much cranking with the OTS tunes. but Waynos table are the way to go

jawn · 10-19-2015, 02:07 AM

Quote:

Originally Posted by smg1138

Sorry, dumb question. Can I use the BIN's in Wayno's zip file directly or do they need to be edited in Romraider first?

I think you only need the E85 cranking tables.

And you should most definitely DO NOT directly use that bin. Those are example files, and have a wide range of changes that you may or may not need. And they're for an Australian automatic transmission car.

phrosty · 10-19-2015, 03:42 AM

I've had no problems cranking at 40F using Wayno's tables. Not sure if I'll want to risk it when things get below freezing.

steve99 · 10-19-2015, 03:56 AM

Quote:

Originally Posted by smg1138

Sorry, dumb question. Can I use the BIN's in Wayno's zip file directly or do they need to be edited in Romraider first?

unless their is one of waynos roms that matches your tune and rom calibration id, you will have to transfer the trables from waynos roms to your rom calid

Toyota86.ir · 10-19-2015, 04:57 AM

E85 start easily above 5C
E100 start easily above 15C

Chad11491 · 10-19-2015, 09:31 AM

I had a noticeable pop this morning when starting with E85 right at 40*. This will be the last tank I run until it warms up again. The loud pop really worries me as it sounds like detonation (note it only did once when starting up). This is the coldest day of the week for us, as the rest will be in the 60-70 range, so I'll run it out and put 93 in for the winter.

Kodename47 · 10-19-2015, 12:59 PM

Quote:

Originally Posted by Chad11491

The loud pop really worries me as it sounds like detonation

Detonation is called pinking for a reason, it doesn't sound anything like popping [

] Popping is more like a misfire, it's not something to be concerned about. You simply won't get "det" at idle.

10-18-2015, 09:40 PM	#1
smg1138 Senior Member Join Date: Jan 2014 Drives: 2013 Raven FR-S Location: Nashville Posts: 775 Thanks: 968 Thanked 213 Times in 136 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	How cold is too cold for E85? I have an OFT and was running Stage 2 UEL E85 tune a while back. However, when the temps starting dipping into the 50's I started getting some cold start issues. I'd have to crank it a couple of times and once it acted really weird on warmup with the throttle going all over the place. That kind of freaked me out, so I switched back to 93. The extra power from E85 was really nice, but I'm worried to keep running it now. What do you guys do when it starts to get cold?

10-19-2015, 03:42 AM	#10
phrosty Senior Member Join Date: Apr 2013 Drives: 2013 FR-S Location: Seattle Posts: 806 Thanks: 202 Thanked 321 Times in 199 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	I've had no problems cranking at 40F using Wayno's tables. Not sure if I'll want to risk it when things get below freezing. __________________ 2013 Whiteout 6AT FR-S \| Perrin Inlet Tube + 2.75" CAI \| OpenFlash Header \| P&L Catback \| 4.88 Final Drive \| Dialed in OFT 2.0x Stage 2 E85 \| 18x8 Enkei Raijin + 225/40 Michelin Pilot Super Sport \| 17x7 Stock + 215/45 Michelin X-Ice Xi-2

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10-18-2015, 09:46 PM	#2
jawn Senior Member Join Date: Jun 2015 Drives: 2015 CWP BRZ Limited Location: NOVA Posts: 2,800 Thanks: 1,801 Thanked 3,946 Times in 1,757 Posts Mentioned: 105 Post(s) Tagged: 7 Thread(s)	Looks like there's a tune tweak to get it to fire while pretty cold (21F). http://www.ft86club.com/forums/showp...1&postcount=40 Or you can switch to 93 for the winter. A lot of folks I know do.

10-18-2015, 10:49 PM	#4
Abe1120 Member Join Date: May 2015 Drives: 2015 scion frs Location: Gurnee Illinois Posts: 25 Thanks: 3 Thanked 2 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	its been getting pretty cold around here in illinois ive seen frost in the morning when i go to start my car up for work and i havnt had any trouble with any start ups yet. any reason why?

10-19-2015, 02:05 AM	#8
trdric Member Join Date: Sep 2014 Drives: fr-s Location: Gatineau Posts: 65 Thanks: 3 Thanked 11 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	I was able to start the car at -10 C last year without much cranking with the OTS tunes. but Waynos table are the way to go

10-19-2015, 04:57 AM	#12
Toyota86.ir Mike Tune HKS E85 FD 4.88 Join Date: Jan 2015 Drives: Toyota GT86 AT NA Stage 2 Location: Tehran Posts: 172 Thanks: 213 Thanked 35 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	E85 start easily above 5C E100 start easily above 15C

10-19-2015, 09:31 AM	#13
Chad11491 Senior Member Join Date: May 2013 Drives: 85.5 Porsche 944, '15 mustang GT PP Location: Duluth, Georgia Posts: 295 Thanks: 116 Thanked 155 Times in 85 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I had a noticeable pop this morning when starting with E85 right at 40*. This will be the last tank I run until it warms up again. The loud pop really worries me as it sounds like detonation (note it only did once when starting up). This is the coldest day of the week for us, as the rest will be in the 60-70 range, so I'll run it out and put 93 in for the winter.

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