OFT E85 from low to high altitude - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Kronos · 03-21-2014, 01:10 PM

In about a month I will be moving from St. Louis MO to Boulder CO. I am pretty excited as the mountains (mountain roads) will be quite literally in my backyard. Just a few hundred feet from where I will be living. It will be a good time to own an 86. As much as I am looking forward to the twisty mountain roads, I won't be looking forward to the significant power loss. Makes me want to go FI. But that's besides the point.

Now what i'm worried about is the altitude change. I'm currently running the E85 tune and there seems to be just a handful of E85 stations around town which I'm okay with. However I'm wondering if I should have anything to worry about when going from roughly 500' to 5000' above sealevel. Are the base tunes flexible enough to handle this?

Shiv@Openflash · 03-21-2014, 01:23 PM

Altitude is not an issue as we use MAF reference for load determination (like the stock tune). We have plenty of customers that live 5000+ feet above sea level.

Kronos · 03-21-2014, 01:26 PM

Fantastic to hear! Thank you for such a quick reply

enwave · 03-21-2014, 01:51 PM

I live at ~4500ft and all my logs look solid on E85 with no tweaks to the OTS map

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FRSoxfan · 03-21-2014, 04:39 PM

I'm at 6,500ft above sea level in Cheyenne, WY and running Shiv's OFT E85 Stg. 2 OTS map, everything looks perfect! Great tune all around.

Shiv@Openflash · 03-21-2014, 06:28 PM

I don't know how you guys live up there. Walking up a few flights of stairs in Denver winds me

enwave · 03-21-2014, 07:05 PM

Quote:

Originally Posted by shiv@vishnu

I don't know how you guys live up there. Walking up a few flights of stairs in Denver winds me

Pushing my gas pedal seems to really wind my engine too -- power loss at altitude sucks!

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DriftHappens · 03-22-2014, 12:08 AM

I'll be up there next week! on 91 though, not enough corn juice gas stations from vegas to cheyenne.

briantran123 · 03-22-2014, 05:20 AM

im located south of denver and we currently have a FRS/BRZ facebook group. https://www.facebook.com/groups/Coloradofrsbrzowners/ join up! we got some great owners and support

Kronos · 03-22-2014, 09:10 PM

Quote:

Originally Posted by briantran123

im located south of denver and we currently have a FRS/BRZ facebook group. https://www.facebook.com/groups/Coloradofrsbrzowners/ join up! we got some great owners and support

Thanks! Just joined. I'm really looking forward to meeting the 86 community in CO.

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DriftHappens · 03-30-2014, 12:29 PM

so, yeah, totally forgot how much altitude sucks. haha. anemic!

03-21-2014, 01:10 PM	#1
Kronos Senior Member Join Date: May 2013 Drives: Asphalt FR-S MT Location: St. Louis MO Posts: 352 Thanks: 324 Thanked 126 Times in 82 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	OFT E85 from low to high altitude In about a month I will be moving from St. Louis MO to Boulder CO. I am pretty excited as the mountains (mountain roads) will be quite literally in my backyard. Just a few hundred feet from where I will be living. It will be a good time to own an 86. As much as I am looking forward to the twisty mountain roads, I won't be looking forward to the significant power loss. Makes me want to go FI. But that's besides the point. Now what i'm worried about is the altitude change. I'm currently running the E85 tune and there seems to be just a handful of E85 stations around town which I'm okay with. However I'm wondering if I should have anything to worry about when going from roughly 500' to 5000' above sealevel. Are the base tunes flexible enough to handle this?

03-21-2014, 01:51 PM	#4
enwave That headunit though... Join Date: Jun 2013 Drives: 2013 Subaru BRZ Limited SSM Location: Provo, UT Posts: 520 Thanks: 304 Thanked 297 Times in 185 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I live at ~4500ft and all my logs look solid on E85 with no tweaks to the OTS map Sent from my iPhone using Tapatalk __________________ 2013 BRZ Limited SSM 6AT Phantom ESC 1.5Dump + E85 + OFH + Q300 Eibach Pro-Kit + Michelin PSS (stock size)

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03-21-2014, 01:23 PM	#2
Shiv@Openflash Senior Member Join Date: Sep 2013 Drives: 2013 FRS Location: SF, CA Posts: 2,629 Thanks: 1,055 Thanked 5,470 Times in 1,494 Posts Mentioned: 605 Post(s) Tagged: 9 Thread(s)	Altitude is not an issue as we use MAF reference for load determination (like the stock tune). We have plenty of customers that live 5000+ feet above sea level.

03-21-2014, 01:26 PM	#3
Kronos Senior Member Join Date: May 2013 Drives: Asphalt FR-S MT Location: St. Louis MO Posts: 352 Thanks: 324 Thanked 126 Times in 82 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	Fantastic to hear! Thank you for such a quick reply

03-21-2014, 04:39 PM	#5
FRSoxfan Member Join Date: Dec 2012 Drives: 2007 Lotus Exige S Location: Cheyenne, WY Posts: 56 Thanks: 5 Thanked 9 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm at 6,500ft above sea level in Cheyenne, WY and running Shiv's OFT E85 Stg. 2 OTS map, everything looks perfect! Great tune all around.

03-21-2014, 06:28 PM	#6
Shiv@Openflash Senior Member Join Date: Sep 2013 Drives: 2013 FRS Location: SF, CA Posts: 2,629 Thanks: 1,055 Thanked 5,470 Times in 1,494 Posts Mentioned: 605 Post(s) Tagged: 9 Thread(s)	I don't know how you guys live up there. Walking up a few flights of stairs in Denver winds me

03-22-2014, 12:08 AM	#8
DriftHappens Member Join Date: Nov 2013 Drives: '14 FRS White Location: Las Vegas Posts: 77 Thanks: 22 Thanked 44 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I'll be up there next week! on 91 though, not enough corn juice gas stations from vegas to cheyenne.

03-22-2014, 05:20 AM	#9
briantran123 Member Join Date: Jan 2013 Drives: fire storm frs 6mt Location: parker Posts: 58 Thanks: 0 Thanked 12 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	im located south of denver and we currently have a FRS/BRZ facebook group. https://www.facebook.com/groups/Coloradofrsbrzowners/ join up! we got some great owners and support

03-30-2014, 12:29 PM	#11
DriftHappens Member Join Date: Nov 2013 Drives: '14 FRS White Location: Las Vegas Posts: 77 Thanks: 22 Thanked 44 Times in 31 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	so, yeah, totally forgot how much altitude sucks. haha. anemic!

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