OFT flex fuel? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

bdtbdtbdt · 03-18-2026, 06:58 AM

I understand that a custom e85 OFT flex fuel tune is needed to work with the , Visconti BRZ/FRS/86 Flex Fuel Kit V3 (via OBD-II CAN bus). My question is is there any sacrifice in performance compared to the canned 93 and e85 tunes.

FRSTen467 · 03-18-2026, 07:38 AM

Probably, no difference in performance, just a convenience thing.

But I'm interested to hear others thoughts.

I'm going to go flex fuel oft the penguin tech racing flex fuel kit in the future. I didn't know there was a can bus option we could use and though evap connector was the only way.

Sent from my Pixel 9 Pro XL using Tapatalk

apex_gr · 03-19-2026, 12:49 AM

too much headache to be honest. I would get the GJP flex fuel kit system and get an ecutek tune. Ecutek supports flex fuel tunes out of box. have Graham @ Boosted Performance do it he did my GRC and the tune came out perfect.

I plan to have him do a flex fuel tune when I get around to upgrading to flex fuel as well.

tomm.brz · 03-19-2026, 04:50 AM

please stop being cheap
have an ecutek tune , flex is very very good on it

menikmati · 03-19-2026, 12:49 PM

Quote:

Originally Posted by apex_gr

too much headache to be honest. I would get the GJP flex fuel kit system and get an ecutek tune. Ecutek supports flex fuel tunes out of box. have Graham @ Boosted Performance do it he did my GRC and the tune came out perfect.

I plan to have him do a flex fuel tune when I get around to upgrading to flex fuel as well.

I recently went with the GJP CANBUS kit and CSG for the tune and it's been flawless.

apex_gr · 03-19-2026, 12:55 PM

Quote:

Originally Posted by menikmati

I recently went with the GJP CANBUS kit and CSG for the tune and it's been flawless.

Gerald is a cool dude I got to meet him at the 86 Matsuri here in Texas. I'll eventually buy one! I miss my OFT E85 tune, but the oil changes smelling like a cheap bottle of $3 tequila I do not miss.

Will be doing a flex e40/50 tune for sure!

tomm.brz · 03-20-2026, 04:41 PM

for who needs it, i can still tune USDM cars with old fashion flex fuel sensor hooked to o2 or cpc input instead of CANbus
Now every tuner does only canbus sensor with shitty bugged racerom 13.3

bdtbdtbdt · 03-21-2026, 07:24 AM

I reached out to the banned oft Guru, Steve99. He has set me all up.

AussieBRZ · 04-06-2026, 06:03 AM

Quote:

Originally Posted by bdtbdtbdt

I reached out to the banned oft Guru, Steve99. He has set me all up.

To contact steve99

https://www.facebook.com/share/1FLsBmgHbf/

bdtbdtbdt · 04-06-2026, 07:25 AM

I could not be happier with my custom flex fuel tune done by Steve (please don't ban me too). He patiently helped me through the simple process. His replies were fast. I went with the Penguin Tech Kit. It took a few hours to install. He tweaked 4 different log files I sent him. The car absolutely ROARS now.

Teseo · 04-06-2026, 12:46 PM

Quote:

Originally Posted by bdtbdtbdt

I could not be happier with my custom flex fuel tune done by Steve (please don't ban me too). He patiently helped me through the simple process. His replies were fast. I went with the Penguin Tech Kit. It took a few hours to install. He tweaked 4 different log files I sent him. The car absolutely ROARS now.

This is what you bought ?
https://www.penguintechracing.com/collections/toyota

bdtbdtbdt · 04-07-2026, 06:59 AM

Yes ,Select the EVAP ETHANOL SIGNAL OUTPUT Option. Good Luck, Enjoy

03-18-2026, 06:58 AM	#1
bdtbdtbdt Member Join Date: Aug 2015 Drives: 2015 Scion FRS Location: Dutchess County N.Y. USA Posts: 54 Thanks: 15 Thanked 16 Times in 8 Posts Mentioned: 0 Post(s)	OFT flex fuel? I understand that a custom e85 OFT flex fuel tune is needed to work with the , Visconti BRZ/FRS/86 Flex Fuel Kit V3 (via OBD-II CAN bus). My question is is there any sacrifice in performance compared to the canned 93 and e85 tunes.

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03-18-2026, 07:38 AM	#2
FRSTen467 Junior Member Join Date: Apr 2022 Drives: 2013 Scion FR-S 10 Series Location: Louisville, Kentucky Area Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s)	Probably, no difference in performance, just a convenience thing. But I'm interested to hear others thoughts. I'm going to go flex fuel oft the penguin tech racing flex fuel kit in the future. I didn't know there was a can bus option we could use and though evap connector was the only way. Sent from my Pixel 9 Pro XL using Tapatalk

03-19-2026, 12:49 AM	#3
apex_gr @apex_blue (IG) Join Date: Mar 2023 Drives: 2016 FR-S Location: Texas Posts: 16 Thanks: 5 Thanked 9 Times in 6 Posts Mentioned: 0 Post(s)	too much headache to be honest. I would get the GJP flex fuel kit system and get an ecutek tune. Ecutek supports flex fuel tunes out of box. have Graham @ Boosted Performance do it he did my GRC and the tune came out perfect. I plan to have him do a flex fuel tune when I get around to upgrading to flex fuel as well.

03-19-2026, 04:50 AM	#4
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,292 Thanks: 517 Thanked 1,125 Times in 815 Posts Mentioned: 70 Post(s)	please stop being cheap have an ecutek tune , flex is very very good on it

03-20-2026, 04:41 PM	#7
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,292 Thanks: 517 Thanked 1,125 Times in 815 Posts Mentioned: 70 Post(s)	for who needs it, i can still tune USDM cars with old fashion flex fuel sensor hooked to o2 or cpc input instead of CANbus Now every tuner does only canbus sensor with shitty bugged racerom 13.3

03-21-2026, 07:24 AM	#8
bdtbdtbdt Member Join Date: Aug 2015 Drives: 2015 Scion FRS Location: Dutchess County N.Y. USA Posts: 54 Thanks: 15 Thanked 16 Times in 8 Posts Mentioned: 0 Post(s)	I reached out to the banned oft Guru, Steve99. He has set me all up.

04-06-2026, 07:25 AM	#10
bdtbdtbdt Member Join Date: Aug 2015 Drives: 2015 Scion FRS Location: Dutchess County N.Y. USA Posts: 54 Thanks: 15 Thanked 16 Times in 8 Posts Mentioned: 0 Post(s)	I could not be happier with my custom flex fuel tune done by Steve (please don't ban me too). He patiently helped me through the simple process. His replies were fast. I went with the Penguin Tech Kit. It took a few hours to install. He tweaked 4 different log files I sent him. The car absolutely ROARS now.

04-07-2026, 06:59 AM	#12
bdtbdtbdt Member Join Date: Aug 2015 Drives: 2015 Scion FRS Location: Dutchess County N.Y. USA Posts: 54 Thanks: 15 Thanked 16 Times in 8 Posts Mentioned: 0 Post(s)	Yes ,Select the EVAP ETHANOL SIGNAL OUTPUT Option. Good Luck, Enjoy

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