COBB Tuning - NexGen Flex Fuel for Subaru 2008-2021 STI

Flex Fuel tuning allows for the seamless blend of standard E10 pump fuel and fuel with higher ethanol content. Our NexGen Flex Fuel Kit and Stage Power Packages provide a turn-key solution to add true Flex Fuel capabilities to your 2008-2021 STI. Head over to the COBB Blog for all of the details.
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[@paulyzee]

Waiting for flex fuel for the fa20 wrx.

[@atriz267]

Still waiting ☹️☹️

[@buudasubuwu]

Still waiting

[@starfirewrx]

Still waiting...

[@spuds3986]

Waiting 😢

[@buudasubuwu]

Waiting

[@xXCoyoteXx2701]

Finally thanks for bringing it back

[@IDKjeromy]

Nice!! Next Gen downpipe next?

[@way2faded]

We need the FA20 WRX kit Cobb. Surely you are aware how many more FA20 WRXs exist and run E than STIs. 🤷‍♂️

[@cobbtuning]

It's in the works!

[@cmdub420]

Will the FA20 engine be able to get flex fuel without other mods or does it need to go stage 2 first? (Intake, TMIC, EBCS)

[@cobbtuning]

Our current plan is to offer multiple "stages" of flex fuel package and OTS maps for the FA20 WRXs.

[@pantology]

@@cobbtuning Thank you! When should we expect to see this for the FA20 WRX?

[@DatBoiBWRX]

When is this coming out fot the 2015+ wrx/ FA20

[@cobbtuning]

TBD, hopefully this fall.

[@SonikJesus]

How long does CARB approval take? I want to get the full stage 2 + Flex package but only the stage 2 package without Flex has CARB approval.

[@cobbtuning]

It depends. We have seen it take anywhere from 30 days to 4 years.

[@mmobley011889]

Will there be a system for GD chassis?

[@chase1897]

This

[@cobbtuning]

TBD.

[@petes0213645975]

@@cobbtuning we need GD support!

[@Apexg80.m3]

Will there be a NexGen Flex Fuel Kit for the 2004-2007 STI also ??? 😭😭

[@cobbtuning]

We hope so!

[@bacon_fat]

Nice driving, Bucky!

[@FlyBoySGT]

This would be a great addition for Gen 3 Raptors.

[@marcoshernandez2839]

Waiting for flex on my 13 hatch wrx

[@dylananddeklintv4544]

Is this going to be an option for the fa20 in the near future?

[@cobbtuning]

We are aiming to bring Flex Fuel back for 2015-2021 WRXs in very early 2024. The solution is going to look a bit different than the current NexGen kit for STIs.

[@dylananddeklintv4544]

@@cobbtuning awesome thank you for the quick reply, I look forward to it’s debut!

[@markusdemain11]

Will this work on my 2014 WRX ?

[@cobbtuning]

It will not, yet. ;)

[@EM29011]

What about the CARB

[@jimsmith8797]

Need for my wrx plzzzzzz

[@mk6_mark920]

When’s this coming for mqb platform!

[@cobbtuning]

Hopefully pretty soon. We are currently working through emissions testing of our Flex Fuel solution for the MQB.

[@SiCaRiI_DaGgEr]

What about 08-14 WRX/STI's

[@cobbtuning]

Working on it!

[@SiCaRiI_DaGgEr]

@@cobbtuning ...Can't wait!

[@mizz079]

ABOUT DAME TIME. LOL WE BEEN WAITING MANNNN

[@IvanLuketina]

Do you guys have a time frame when this would come out for the VA WRX? 2015-21?

[@cobbtuning]

Shooting for this fall!

[@spuds3986]

@@cobbtuning it’s winter

[@caseygerlach1151]

@@cobbtuning Updates for WRX 2015+?

[@cobbtuning]

@@caseygerlach1151 We are currently targeting early-mid February to reintroduce flex fuel for VA WRX.

[@rustyshackleford81]

After the VA in February any timeline for the GD release? I'm so hopeful, please make it happen. Don't forget about us 04-07 guys, we are still out here.

[@jamesjolly9457]

When does this come out for 08-14 wrx/STi?

[@cobbtuning]

Trying to hone in on a date, but should hopefully be available for GR/GV STI in the next few months.

[@JermJermFlores]

When do these hit the store????

[@cobbtuning]

They're available right now at cobbtuning.com!

[@tranwrx]

COBB NexGen Stage 2 to Stage 2 + Flex Fuel Power Package Upgrade 2008-2021 STI. Question?? Do i have to upgrade my fuel pump and injector?

[@cobbtuning]

An upgraded fuel pump is required for the NexGen Stage2 and NexGen Stage2+FlexFuel map files. It is included with the NexGen Stage2 Power Packages but is not part of the "Upgrade to Flex Fuel" Package.

[@anotherstar8125]

so... what's the CARB-approved tuning potential...?

[@kdhamons]

C’maaaaahn FA20 tune 🤞

[@jimmyspencer2195]

So the Nexgen kit only works if I also buy cobbs fuel lines aswell that’s a lot of money when they could’ve just included it, or better yet make it fit stock rails

[@cobbtuning]

The factory rails have some issues that are especially present when using fuel injectors that flow more than stock so we will always recommend our lines/rails/FPR configuration as it is in the Stage Power Packages.

[@rustyshackleford81]

You'll want parallel feed fuel lines considering the increased volume you'll need to run ethanol. It doesn't have to be Cobb brand lines, you can absolutely diy, but you're going to need rails, afpr, and parallel feed lines.

[@yuno3364]

I am SOOO EXCITED!!!!!

[@s2klily810]

Sooooi will just need this kit, fuel pump and injections? After that one tune and I can run 85,91 or 93 without changing the tune?

[@cobbtuning]

Short answer - yes (I think). Longer answer - If you want to use our supporting Off The Shelf maps you would need all of the components in the NexGen Power Package. Custom tuning is available for other configurations that are capable of supporting fuel with higher ethanol concentrations. - Marshall@COBB

[@birdslappy]

So no more downpipes will be produced for VA wrxs

[@pharmztko]

Nice 🔥 Hurry up with the VB kit so people can see some real hp/tq numbers 😂

[@cobbtuning]

It's on the list! Have to work through our normal custom features first to get torque and load caps out of the way.

[@pharmztko]

@@cobbtuning 💙💛💙💛

[@MrGsxrme]

Technical speaking, is this a new digital communications vs the old analog communication via the ECU? 0.5v-4.5v analog readings wasn't always super accurate.

[@cobbtuning]

This is still utilizing an analog 0-5v input.

[@ryukoysusei]

So what about the VA WRX?

[@cobbtuning]

Working on it, hopefully this fall.

[@christianmartinez6926]

How soon before we get it for 08-14 wrx's?

[@thenicaraguan]

Is any of this interchangeable with the old flex fuel sensor kit? Also, would I need to swap out my entire previous flex fuel kit or just get something like a new harness?

[@cobbtuning]

You can continue to use your fuel system as-is and replace the module/harness with NexGen components. www.cobbtuning.com/products/fuel-system/subaru-previous-ethanol-sensor-kit-to-nexgen-flex-fuel-ethanol-sensor-kit-upgrade-module-harness-only-sti-2015-2021

[@gtrguyinaz]

Wow, we have had this for GTRs for 8 years… wooopie…

[@hssnd]

I'm curious, what has changed from the last version, and what about the EPA shit that took away the single Flex Fuel maps? Also would there be any benefits in upgrading kits if already tuned for the old kit?

[@cobbtuning]

The short of it is that these new kits do not require any DTC suppression and allow full function of factory emissions equipment and sensors (TGV).

[@hssnd]

@@cobbtuning Was the TGV set up why you couldn’t run the stand-alone flex fuel map and had to run separate maps?

[@evanchi9460]

​@@hssndAre you misunderstanding flex fuel tunes vs a static ethanol content map? The flex fuel tunes used a TGV sensor input to feed the ECU data to interpret live ethanol content. The only alternative to tuning ethanol with Greenspeed was a regular tune procedure at a specific ethanol blend of choice. Varying from that blend requires another tune, or filling up with pump and switching maps.

[@hssnd]

@@evanchi9460 no

[@JustinTHuffman]

Golf GTI WHEN

[@cobbtuning]

This week!

[@21277006562861]

Need info on people who have older flex fuel kit. How much it will cost us to replace the old one

[@thrillingd]

there’s no need at all…

[@nickabiva5022]

Whens the FA platform going to get one?

[@ridazach53]

Thats great but after you guys sold me my flex fuel kit a month before banning it . And not doing anything for me . I wont be buying anything from cobb again

[@cobbtuning]

We offered a lengthy and very generous return/refund program for those who purchased the previous flex fuel kits.

[@ridazach53]

@@cobbtuning i was told if it was opened or used that it couldnt be returned. I dont find that to be generouse when i was unaware that i wouldnt be able to get my car tuned with it anymore

[@alexudolkin2146]

How about for EJ255? (08-14 wrx)

[@cobbtuning]

In the works! Hoping to roll it out in early 2024.

[@karlmanganti2841]

Will this be compatible with invidia dp?

[@Anonymoose0913]

So how far away are we from getting secondary airpump deletes and TGV deletes back? Seems a bit ridiculous I cant turn off a check engine light in my vehicle. Dont really want to go to a Standalone but its looking like thats about the only play now.

[@cobbtuning]

That functionality will not be returning to our platform.

[@Anonymoose0913]

@@cobbtuning Wow. Can't believe you guys folded like that. Haltech 1500 here we come.

[@mainelybuilt]

Wating for the ej set up

[@slimjim7671]

Any plans on coming out with a new downpipe for the 2015-2021 STI?

[@cobbtuning]

Not at the moment.

[@j_zales1390]

Any flex fuel for the older models coming out?

[@paladin9933]

AND an option for those that don't already have the older kits for the "upgrade" option. #ALLEARS

[@cobbtuning]

Yes, we're already working on bringing in support for additional cars!

[@paladin9933]

@@cobbtuning That's great news? Any idea on the price (e.g., similar to that of the newly released kits)?

[@15subarusti59]

Cobb isn't the only company that makes these I believe there is another company called racecarmods or something like that

[@goodnaruk]

is a re-tune or AP update required to upgrade from the old system to the new system or are any tune revisions needed? or is it plug and play?

[@cobbtuning]

The wiring harness is plug-and-play with your existing ethanol content sensor however there ARE calibration differences so your Protuner would need to update a custom map.

[@moisesr7840]

Is this kit compatible with 2008-2014 WRX?

[@cobbtuning]

Not yet, working on it though!

[@officialfinalboss4800]

What will the new plugs connect too? The old system is tgvs.. what will this one use?

[@cobbtuning]

Still connects through the TGV connector.

[@officialfinalboss4800]

I thought it takes over the tgv and throws a code? How does the new one prevent that bc I have the old cobb kit 06 sti

[@yiutam5006]

Unfortunately, I am a resident of the California Bay Area. Currently, my 2018 Type RA is running the Stage 1+ intake package. Have you released a Stage 2 upgrade package without the flex fuel kit? I couldn't find any relevant products on your website. Alternatively, will you be obtaining carb certification for the entire upgrade package including the flex fuel kit?

[@cobbtuning]

Hey there! Our NexGen Stage 2 Power Packages are applicable to your Type RA and covered by a CARB EO. We do not yet have an EO covering the +Flex Fuel version of the package/calibration, but are hopeful it is possible to obtain at some point.

[@yiutam5006]

I mean the Stage 1+ to NexGen Stage 2 upgrade package, as I don't want to get the AP and intake system once again.@@cobbtuning

[@juancitomarin4935]

Are the Iag fuel rails/ kit compatible with this kit?

[@cobbtuning]

We can only guarantee fitment with the COBB Fuel Rails and Fuel Line Kit.

[@bigcobo5378]

For the FA20 yet?

[@cobbtuning]

It's in the works, hoping to release around the end of the year.

[@speed2k5]

Any promo coming soon ? 💳💸

[@SINISTERCRUMB]

Is this able to be run on fully stock sti? Or does pump/injectors etc need upgraded first?

[@cobbtuning]

In order to utilize our supporting Off The Shelf Map, you would need all of the components within the NexGen Stage 2 + Flex Fuel Power Package.

[@roli710]

Would this be compatible with all ej motors? Or would you make one for previous models?

[@cobbtuning]

This is currently only compatible with 2015-2021 WRX STI. We will be working on adding more vehicle support over the coming months.

[@mizz079]

Yup take care of my gen STI 1st lmao 😂

[@brap_stu_tu_tu]

@@cobbtuning waiting for an 06/07 STI!!!!!

[@SmokingNinja69]

@@cobbtuning make sure you take care of the legacy gt, forester, and outback xt crowd please 🙏

[@jamzjamz2352]

@@cobbtuning waiting for 2013 wrx setup 😅

[@aflyingducky]

Flex Fuel Next Gen now available 😃😃 Not Legal in CA 😖😖

[@Wolfkazegohan]

Frs and brz support when ?

[@cobbtuning]

No plans at the moment, sorry!

[@joshuamelendy2015]

Is this compatible with the fa20 wrx’s?

[@cobbtuning]

Not yet, hopefully this fall!

[@skatetown100]

would like this for my older EJ engine .. whaat whaaat 🙂

[@erickorellana9642]

Could we run the 15+ on 08-14 STI?

[@cobbtuning]

Not yet. While the hardware will be the same, we have a bit of work left to do on software and map files.

[@Ryan-719]

Nice. I want it.

[@dinosoarskill17]

how much does this cost to do to a stock STI?

[@cobbtuning]

$4100-4300 depending on which package you choose (normal SF Intake or Redline Carbon Fiber). www.cobbtuning.com/nexgenflexfuel/

[@VisionWide3]

Is this carb legal?

[@cobbtuning]

While this product is not covered by a CARB EO and is not available in California, it has been third party emissions tested and is available in other states while we work towards acquiring an EO.

[@MrGsxrme]

The entire world is waiting for a real flexfuel option for the 2022+ WRX. Where is any updates or press? Silence on the product makes Cobb look incompetent.

[@cobbtuning]

Try looking harder. We have repeatedly stated it's something we're going to pursue adding in 2024.

[@Toonpiston]

Perfect timing! Now I just have to wait until it's CARB legal!

[@Dylan-455]

Imagine living in California

[@Toonpiston]

@@Dylan-455 thats what it be, the state that just hates its people

[@davidsmith4186]

#cobbtuning

[@roymartinez25]

WE NEED THIS FOR THE VW GTI/GOLF R A LOT OF US HAVE SWAPED FROM COBB TO OTHER TUNE PLATFORM BECAUSE OF THIS ITS BEEN YEARS AND NOTHING, LITTLE DISAPPOINTENT FROM THE VW/MQB FAMILY.

[@PANOPTIC-VIDS]

How crazy is it that every time I go to my Subaru dealership to get maintenance service on my 2019 STI there's always a sti getting new engine replacement I wonder why 😂

[@PlumberWRX]

Because these engines are shit 😂

[@mizz079]

Downpipe tuning coming soon?

[@buudasubuwu]

My poor 21 fa20 just waiting 🥹🥹🥲

[@cobbtuning]

Not much longer! - Marshall@COBB