Subaru Flex Fuel Is Here!
First, we teased you. Then, we taught you. Now, we empower you.
COBB Custom Features
The time has come! Subaru Flex Fuel is now available via COBB Custom Features. Updates to the Accessport V3 and Accesstuner Pro now allow users to configure their vehicles to run a true flex fuel setup. Gone are the days of changing maps after every visit to the gas pump. This feature, and MUCH more is all available as a part of COBB Custom Features. With the integration of custom code and monitors, these features are only available on the Accessport V3. If you’re still rockin’ your old trusty V2 Accessport, don’t fret! We have an Accessport Trade-In Program that can lower the cost of a V3 by up to 50%!!
The initial release of COBB Custom Features will include the much anticipated Subaru Flex Fuel Feature along many other improvements to our Subaru offering. A complete list of new features for Accesstuner Pro are listed below!
- Flex Fuel Feature (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- Fuel Pressure Differential Feature (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- Custom Sensor Logging Feature (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- TGV Sensor Input Duplication Mode (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- Fuel Economy Display Auto-Correct Feature (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- Per-Gear Wastegate Duty and Boost Targets Feature (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- Speed Density Compatible MAF failure mode (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- 40 new Manifold Wall Wetting Comp Tables and 11 new Monitors (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- New A/F Learning #1 Tables (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- New Closed Loop Target Comp Force OL Tables (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- New Ignition Timing Cold Start Comp Tables (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- New Front O2 Smoothing Factor Table (USDM 08-16 STi, USDM 08-14 WRX MT, ADM 15-16 STi)
- New BETA toggle for disabling the stratified warm-up strategy (16 WRX 6MT/CVT and 16 FXT)
These features are all available now via Accesstuner Pro! CLICK HERE for the nearest authorized Protuner or COBB Shop for a custom Flex Fuel tune or to take advantage of other COBB Custom Features!
Subaru Flex Fuel Components and Packages
The following components and packages are live and available for purchase immediately! Head over to the COBB store to get your today!
Subaru Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014 (315600) – MSRP $600.00
Subaru Fuel Pressure Sensor Kit – STI 2008-2016, WRX 2008-2014 (315650) – MSRP $225.00
Subaru Flex Fuel Package – WRX 2008-2014, STI 2008-2016 (315F03) – MSRP $800.00
- Flex Fuel Ethanol Sensor
- Kit Fuel Pressure Sensor Kit
Accessport + Subaru Flex Fuel + Fuel Upgrade Package – STI 2015-2016 (316F01) – MSRP $2,100.00
- Subaru Accessport V3 (AP3-SUB-004)
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- Subaru Fuel Pressure Regulator Kit – STI 2008-2016
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
Accessport + Subaru Flex Fuel + Fuel Upgrade Package – STI 2008-2014 (315F01) – MSRP $2,100.00
- Subaru Accessport V3 (AP3-SUB-003)
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- Subaru Fuel Pressure Regulator Kit – STI 2008-2016
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
Subaru Flex Fuel + Fuel Upgrade Package – STI 2008-2016 (315F02) – MSRP $1,690.00
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- Subaru Fuel Pressure Regulator Kit – STI 2008-2016
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
Subaru Flex Fuel + Fuel Upgrade Package – WRX 2008-2014 (315F05) – MSRP $1,410.00
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
Subaru Stage 3 + FF Power Package STI Hatch 2008-2014 (615X23FF) – MSRP $4340.00
- Subaru Accessport V3 (AP3-SUB-003)
- Subaru SF Intake System
- Subaru SF Airbox
- Subaru SS 3″ Downpipe
- Subaru SS Turbo Heatshield
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- COBB Vehicle Badge
- Subaru SS 3″ Cat-Back Exhaust
- Subaru Fuel Pressure Regulator Kit STI 2008-2016
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
Subaru Stage 3 + FF Power Package STI Sedan 2011-2014 (615X43FF) – MSRP $4,340.00
- Subaru Accessport V3 (AP3-SUB-003)
- Subaru SF Airbox
- Subaru SF Intake System
- Subaru SS 3″ Downpipe
- Subaru SS Turbo Heatshield
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- COBB Vehicle Badge
- Subaru 11-14 WRX/STi Sedan Cat-Back Exhaust System
- Subaru Fuel Pressure Regulator Kit STI 2008-2016
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
Subaru Stage 3 + FF Power Package STI 2015-2016 (616X30FF) – MSRP $4,640.00
- Subaru Accessport V3 (AP3-SUB-004)
- Subaru SF Intake System
- Subaru SF Airbox STI 2015-2016
- Subaru SS 3″ Downpipe
- Subaru SS Turbo Heatshield
- Subaru AEM High Flow Fuel Pump 2005-2009 LGT, 2008-2014 WRX, 2008-2016 STI
- Subaru Top Feed 1000cc Fuel Injectors – WRX 2002-2014, STI 2007-2016
- COBB Vehicle Badge
- Subaru SS 3″ Cat-Back Exhaust 2015-2016 WRX / 2015-2016 STI
- Subaru Fuel Pressure Regulator Kit STI 2008-2016
- Flex Fuel Ethanol Sensor Kit – STI 2008-2016, WRX 2008-2014
- Fuel Pressure Sensor Kit – WRX 08-14, STI 2008-2016
Must… have… 07 sti flexfuel… lol
07 Legacy GT spec.B checking in on any news whatsoever for support…. ?
You guys working on flex kit for GTR
Hey Ernie, we do not currently have plans to offer a plug and play kit for the GT-R. There are others already available that do a great job and work very well with our GT-R Flex Fuel software.
Marshall@COBB
Thank you
“New BETA toggle for disabling the stratified warm-up strategy (16 WRX 6MT/CVT and 16 FXT)”
Will this be available for the ’15 WRX as well?
Also, what’s the timeframe for ’15+ WRX FlexFuel?
Thanks
Hey Marc,
This feature will potentially be available for the 2015 WRX upon further investigation and testing. DIT WRX Flex Fuel is actively being worked on, I would expect to see more developments on that in the next few months!
Marshall@COBB
Are there still plans to release an OTS Stage 3 FF map?
Yes! We are now aiming to release those maps by the end of March.
Marshall@COBB
will I need a new fuel pump? I currently have a dw65.
I believe Deatschwerks claims that pump is ethanol compatible. It’s not one that we tested during our development but I assume it would be up to the task.
Marshall@COBB
If I am running top feed Injector Dynamics 1000cc injectors, will the maps you guys are creating work with my injectors, or would they only work exclusively with the injectors in the kits?
Also, I am anxiously waiting on a kit for the 4th gen Legacy GT. #LegacysMatter
Hey Paul, we’ll have more information on that with the release of Flex Fuel OTS maps. In short, you -should- be just fine with the standard ID 1000s.
Marshall@COBB
So in another post you mentioned that we should expect up to a 10% improvement in power from running e85, which for my 2009 wrx should put me at maybe 320-330 whp/ft lbs(assuming all the planets line up correctly and the car fairy gives me an extra sprinkling of pixy dust.) In your opinion how reliable is the ej255 and 5 speed transmission at that power level? And can I run that much power without messing with the engine internals? Also do you guys have any recommendations for clutches at that power level?
Hey Mark!
Exact power output would obviously vary slightly depending on conditions, dyno, and vehicle setups. An employee here with a 2014 WRX recently made around 330whp/380wtq on an E85 tune. That power level proved to be more than the factory clutch could take as it began to slip at higher loads. The car was dialed down a bit to save the clutch and has been perfectly reliable since then. I would say that’s probably about as far as I would take the factory motor and transmission in those cars before reliability becomes a concern.
Marshall@COBB
When should we see OTS maps for Stage 3 +Flex Fuel?
Hey Jeff,
We’re hoping to finalize Stage3+FF maps for the 2015-2016 STI in the next couple of weeks. 2008-2014 STI maps will come shortly thereafter.
Marshall@COBB
Any news for release date for 2006 sti? Waiting patiently
Hey Sean, we are not yet close enough to estimate a release date. Our current priority is with DIT WRX, GD WRX and STi support will follow.
Marshall@COBB
Any update on the DIT WRX? My car has been asking me for corn.
We are continuing to investigate Flex Fuel for DIT WRX. No ETA quite yet, though!
Marshall@COBB
Any date you think you will have the FF maps out for the 208-2014 sti? This is the only thing holding me back right now from dropping the money on it and every day I think more that I’m not needing it and look for other items to spend the money on.
Hey Robert! No updates on the 2008-2014 STI Flex Fuel OTS Maps quite yet. We’ve been dealing with some dyno woes here recently and are hoping to be operational again very soon! – Marshall
I have an 04 STi, so I am waiting for confirmation that Flex Fuel will be released for it before I upgrade from my AP V2 to V3. Will access tuner race support flex fuel, or just pro?
Thanks,
-David
Marshall, any news on FA20DIT Flex Fuel?
Thanks.
We had a bit of a set-back with Subaru’s recent recall, I would optimistically estimate a Summer release for DIT Flex Fuel.
Marshall@COBB
You guys need to stop tickling our you know what and release flex fuel for the 04-07 STI. I know more people who drive those years of cars than the 2008 and up STI’s! Please!!!
Just following up to find out if there has been any news regarding the 05-09 Legacy GT (specifically, i care about the 2007 as I own an ’07 spec.B) as far as Flex Fuel goes. I already have most of the components necessary for this and recently switched over to E85.
If one is not available, i’d even consider bringing my car to you to use for testing if necessary. (i’m in Omaha, NE)
Hey Brian, we don’t really have any updates on that front right now. We have been collecting all of the requests and the Legacy crowd definitely has a strong showing. As it currently stands, additional Flex Fuel support would come after both the DIT WRX and GD WRX/STI releases.
Marshall@COBB
Following up on the progress you guys have made on releasing the flex-fuel sensor for the 06-07 STi model? ETA? I have all the other parts on hand
Thanks!
Hey there, we are still planning to release Flex Fuel for the GD-chassis STi near the end of this year. Once we have completed and released Flex Fuel for the 2015+ DIT WRX we will have a better estimate on a timeline.
Marshall@COBB
Hi, i am just wondering when the flex fuel kit will be released for the 2015 wrx.
Hey James! We’re shooting for a summer release for DIT WRX Flex Fuel.
Marshall@COBB
any updates on the flex fuel for DIT ?
We are still shooting to have something available by the end of this summer! Hoping to have some significant updates for everyone in the next month or so.
Marshall@COBB
i know i asked multiple times, but just really anxious to know when the release for the DIT will be?
Hey James, we’re still on pace for a hopeful late-Summer release. Small delay to add vehicle support for the 2017 WRX/STI and then we’ll be right back on Flex Fuel!
Marshall@COBB
For the 2015+ WRX will an OTS map be available at release?
That has not yet been decided. I can say that if an OTS map is available, it will likely be limited to around a 30-40% ethanol blend.
Marshall@COBB
what does a late-summer release actually mean? august? for the 2015 wrx
Hi James,
The current track is looking like late September.
Kyle@COBB
What’s all needed for the kit?
That’s a relatively open-ended question. You can, in theory, install the Flex Fuel Ethanol Sensor Kit onto a supported vehicle and have a Flex Fuel tuned car. Most applications will require upgraded fuel system components in order to support the additional required fuel flow from a high ethanol content fuel. So, it really depends on what the vehicle’s setup is and the end goals.
Marshall@COBB
Do you guys have any updates on the FF kits for the 2015+ WRX?
We’re making great progress on both the hardware and software implementations for DIT WRX Flex Fuel. Hoping to have that available as a complete solution in the coming months. We were unfortunately delayed a bit with adding MY2017 vehicle support so our Flex Fuel timeline has slipped a bit.
Marshall@COBB
Hey any updates on the flex fuel kit for the DIT WRX?
We are getting there! Hoping to have something available around the end of this month.
Marshall@COBB
Will 2015+ WRX flex fuel kit be in the same price range as the STI kits?
Yep, it should be as the hardware is very similar!
Marshall@COBB
Trying not to pester. Checking in again for Flex support on my 2007 spec.B 🙂 My Cobb certified tuner would love to get me in for this…. when available 🙂
We do plan to investigate adding Legacy Flex Fuel support after the GD Flex Fuel project is complete. Current timeline slates that investigation for early 2017 at which time we should have a better idea on development efforts and a rough release timeframe.
Marshall@COBB
sorry i probably commented 10 times on this page, but i can’t wait for the flex fuel kit release for the FA WRX :), any updates?
We’re getting there!
Marshall@COBB
You guys almost there?
Getting very, very close!
Marshall@COBB
Rumors going around on forums that you guys are giving up on the 2015+ WRX flex fuel kit. Is this true?
That is definitely not true at all. I drove our shop 2015 WRX with a production Flex Fuel kit and tune just this weekend. It should be released very soon!
Marshall@COBB
when exactly is it going to be released? i’ve been waiting patiently for months now 🙂
For which platform? We’re merely days away from the Subaru DIT release and GD WRX/STI Flex Fuel will likely come in early 2017.
Marshall@COBB
Yeah im waiting for the DIT release, can you post a link when it is available for purchase?
Absolutely, we’ll make announcements on all of our usual channels once it’s available!
Marshall@COBB
Any good news on the LGT support, Marshall? Looking forward to blowing my tax refund on something necessary lol.
Hey Josh!
It’s next up on the priority list so we’re hoping to have some good news shortly.
Marshall@COBB
Hey Marshall think we will see the GD flex fuel released this month ?
It likely will not be available this month, our current estimate is showing sometime in March.
Marshall@COBB
Hey Marshall, I notice on one of the above comments on March 4, 2016 that yall had plans of releasing OTS maps for 2015+ sti Stage 3 FF by the end of march of 2016. So its been almost a year and no OTS map yet. Are yall still planning of releasing a OTS map? If so, when do you think?
Those plans did indeed change and we no longer have plans to offer an OTS Flex Fuel option.
Marshall@COBB
Any plans for this becoming available for 2007 FXT MT? Would love to have this as an option.
We do not currently have plans to implement Flex Fuel on the Forester platform however if demand is seen we can certainly look into it.
Marshall@COBB
Hi, Guys any news on Flex Fuel for the LGTs?
We do not have any new information related to LGT Flex Fuel. Once GD Flex Fuel has been finished up and released we should be able to do some additional investigation.
Marshall@COBB
Thank you Marshall.
07 Legacy GT spec.B owner following up again. Any news to share? Still plans for this platform or is that getting less likely? (already running straight E85, would really REALLY like to be FLEX)
Good news! Legacy Flex Fuel is currently being worked on. Unfortunately not close enough to provide any sort of ETA.
Marshall@COBB
Been waiting for flex fuel for my Lgt since 09. E85 is not reliable here in North East. I would buy the kit the second it’s available.
Hoping you don’t have to wait much longer!!
Marshall@COBB
when does the 02 wrx get awesome flex fuel?
Hey there! We do not currently have plans to offer a flex-fuel solution for the factory 2002-2005 WRX ECUs.
Marshall@COBB
Is there any Fuel Flex for Subaru WR X 2018? I don’t see it.
Hi Boris,
Our original Flex Fuel solution for Subaru vehicles was discontinued last year. We making great progress on a new solution and hope to be able to share some details about it very soon!
Marshall@COBB