E85 Users...I have a question. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FloridaBRZ · 05-01-2015, 09:13 AM

Any one else running E85 with an OFT Stg2 UEL tune? I have found that since running E85, I have had a slower than normal start first thing in the morning. Just the very first start, it seems to hesitate a bit. Unfortunately, it seems to be getting worse. This morning I started my car and it hesitated for a second, then seemed like it almost stalled. I drive a manual, if it makes a difference. I didn't know if the viscosity of E85 was different than normal 93 octane, and it was just a fuel pump issue and nothing to worry about, or if I should go back to 93 octane. I don't want to damage my car.

Thanks,
Tim

CBR600RR · 05-01-2015, 09:55 AM

e85 doesn't like cold temps during start up. this is normal

raven1231 · 05-01-2015, 10:02 AM

That's assuming that its cold in Venice. It's 80 right now in Miami.

D_Thissen · 05-01-2015, 11:02 AM

I heard once the temp drops below 50F, its a bit more difficult to start because the fuel doesn't vaporize the same. Could be wrong though..

Ashikabi · 05-01-2015, 11:11 AM

I have also heard cold start is hard, hence the 70% switch in the winter

FloridaBRZ · 05-01-2015, 12:42 PM

Okay. As long as Im not damaging anything. That was my primary concern. And its only the first start of the morning, once its sat all night. And Venice is not cold. I believe it was a frigid 75 when I woke up. But if its normal, Im happy. I LOVE the gains that I have and the smooth powerband that E85 has given me. Only problem is driving to get it....only one station with E85 in a 40 mile radius from my house.....

Jaden · 05-01-2015, 12:54 PM

Quote:

Originally Posted by FloridaBRZ

Okay. As long as Im not damaging anything. That was my primary concern. And its only the first start of the morning, once its sat all night. And Venice is not cold. I believe it was a frigid 75 when I woke up. But if its normal, Im happy. I LOVE the gains that I have and the smooth powerband that E85 has given me. Only problem is driving to get it....only one station with E85 in a 40 mile radius from my house.....

I live in southern california and it's the same thing. Don't worry about it. I hate having to turn it over twice so I'll feather the gas pedal and it won't stall out...

Jaden

kch · 05-01-2015, 01:21 PM

I've found that if you turn the ignition on for a few seconds (don't crank the motor, just set the ignition "on") it seems to start up with less hesitation.

Note: this may be all in my imagination.

F3RGY68 · 05-01-2015, 02:10 PM

Quote:

Originally Posted by kch

I've found that if you turn the ignition on for a few seconds (don't crank the motor, just set the ignition "on") it seems to start up with less hesitation.

Note: this may be all in my imagination.

That's priming the fuel pump; any car usually will start easier or the same. It's a safe thing to do that can alleviate component stress.

Scott@HKSUSA · 05-01-2015, 02:36 PM

Stations are transitioning out of winter blends and into summer blends with higher ethanol contents so it would make sense for it to be a little harder to start on a "cooler" morning. As the weather continues to warm up it should get better for you. Unless you were tuned on E70...

FloridaBRZ · 05-01-2015, 07:53 PM

Quote:

Originally Posted by Scott@HKSUSA

Stations are transitioning out of winter blends and into summer blends with higher ethanol contents so it would make sense for it to be a little harder to start on a "cooler" morning. As the weather continues to warm up it should get better for you. Unless you were tuned on E70...

I'm running the stage 2 UEL E85 tune from Shiv, so I'm not sure exactly what it is rated at/for. Btw, LOVE your products. Thanks for all you do for our cars!

kch · 05-01-2015, 11:27 PM

Quote:

Originally Posted by FloridaBRZ

I'm running the stage 2 UEL E85 tune from Shiv, so I'm not sure exactly what it is rated at/for. Btw, LOVE your products. Thanks for all you do for our cars!

Shiv's stock tunes are pretty conservative and I think are tuned for around E665

Guff · 05-01-2015, 11:35 PM

There's a thread here for modifying the injector pulsewidth for cold starts in RomRaider. My car never had an issue with starting after that. Lemme see if I can find it...

Edit: Found it!

http://www.ft86club.com/forums/showp...1&postcount=40

It might take some fine tuning to get it perfect but this post is definitely very helpful.

steve99 · 05-01-2015, 11:48 PM

Quote:

Originally Posted by Guff

There's a thread here for modifying the injector pulsewidth for cold starts in RomRaider. My car never had an issue with starting after that. Lemme see if I can find it...

Edit: Found it!

http://www.ft86club.com/forums/showp...1&postcount=40

It might take some fine tuning to get it perfect but this post is definitely very helpful.

Yes those tweaks will likely fix cold start issue (got that info in tune tweaks thread link below)

Also you can add a gallon of 93 petrol to full tank of E85 to dilute E% in winter just keep overall E% about about E60

05-01-2015, 09:13 AM	#1
FloridaBRZ Senior Member Join Date: Oct 2013 Drives: 2013 Subaru BRZ Limited 6sp DGM Location: Venice, FL Posts: 144 Thanks: 14 Thanked 186 Times in 36 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	E85 Users...I have a question. Any one else running E85 with an OFT Stg2 UEL tune? I have found that since running E85, I have had a slower than normal start first thing in the morning. Just the very first start, it seems to hesitate a bit. Unfortunately, it seems to be getting worse. This morning I started my car and it hesitated for a second, then seemed like it almost stalled. I drive a manual, if it makes a difference. I didn't know if the viscosity of E85 was different than normal 93 octane, and it was just a fuel pump issue and nothing to worry about, or if I should go back to 93 octane. I don't want to damage my car. Thanks, Tim

05-01-2015, 10:02 AM	#3
raven1231 Senior Member Join Date: Aug 2013 Drives: 2013 Firestorm FR-S, 2016 DGM WRX Location: Cincinnati, Ohio Posts: 4,580 Thanks: 8,264 Thanked 3,118 Times in 1,667 Posts Mentioned: 24 Post(s) Tagged: 1 Thread(s)	That's assuming that its cold in Venice. It's 80 right now in Miami. __________________ http://www.ft86club.com/forums/showthread.php?t=59870

05-01-2015, 11:02 AM	#4
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	I heard once the temp drops below 50F, its a bit more difficult to start because the fuel doesn't vaporize the same. Could be wrong though.. __________________ My FR-S Build IG: dthissen

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05-01-2015, 09:55 AM	#2
CBR600RR Senior Member Join Date: Jul 2012 Drives: Raven Black Location: Ottawa, Canada Posts: 1,343 Thanks: 451 Thanked 563 Times in 276 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	e85 doesn't like cold temps during start up. this is normal

05-01-2015, 11:11 AM	#5
Ashikabi Senior Member Join Date: Aug 2014 Drives: 2013 FR-S Location: Northwest Iowa Posts: 7,359 Thanks: 454 Thanked 4,549 Times in 2,950 Posts Mentioned: 59 Post(s) Tagged: 5 Thread(s)	I have also heard cold start is hard, hence the 70% switch in the winter

05-01-2015, 12:42 PM	#6
FloridaBRZ Senior Member Join Date: Oct 2013 Drives: 2013 Subaru BRZ Limited 6sp DGM Location: Venice, FL Posts: 144 Thanks: 14 Thanked 186 Times in 36 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Okay. As long as Im not damaging anything. That was my primary concern. And its only the first start of the morning, once its sat all night. And Venice is not cold. I believe it was a frigid 75 when I woke up. But if its normal, Im happy. I LOVE the gains that I have and the smooth powerband that E85 has given me. Only problem is driving to get it....only one station with E85 in a 40 mile radius from my house.....

05-01-2015, 01:21 PM	#8
kch Senior Misanthrope Join Date: Sep 2014 Drives: 2015 BRZ Series.Blue CWP Location: Seattle, WA Posts: 1,490 Thanks: 1,743 Thanked 1,169 Times in 645 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	I've found that if you turn the ignition on for a few seconds (don't crank the motor, just set the ignition "on") it seems to start up with less hesitation. Note: this may be all in my imagination.

05-01-2015, 02:36 PM	#10
Scott@HKSUSA Join Date: Jan 2015 Drives: 2013 FR-S, HKS V2 S/C Location: Madison Heights, MI Posts: 115 Thanks: 0 Thanked 173 Times in 72 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Stations are transitioning out of winter blends and into summer blends with higher ethanol contents so it would make sense for it to be a little harder to start on a "cooler" morning. As the weather continues to warm up it should get better for you. Unless you were tuned on E70...

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