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BRZ First-Gen (2012+) -- General Topics All discussions about the first-gen Subaru BRZ coupe


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Old 05-23-2020, 12:34 PM   #1
kuchez96
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Flex Fuel for 2017+ models

Hey guys, I recently started to look into getting E85 for my 2019 BRZ and I am unsure of which direction to go and what exactly I need.

Firstly, I'd like to say I prefer going the OFT route with their kit so I can reflash to stock tune on the spot and use OTS tunes. However, I do not know if their kit is compatible with 2017+ models.

Second, the ECUTeK route. I've gotten a lot of feedback on this route and people say it is the best route. If I were to go this route, what would be the best kit to get, does it come with a tune, are there multiple maps I can use/ OTS tunes, do I need to pay for tunes anytime I want to retune?

2019 BRZ with Remark Muffler Delete and plan on getting a Tomei UEL.
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Old 05-23-2020, 08:59 PM   #2
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I’ve been reading into this too. Can the fuel system (pump, lines, etc.) handle E85 no problem?
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Old 05-23-2020, 09:45 PM   #3
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I’ve been reading into this too. Can the fuel system (pump, lines, etc.) handle E85 no problem?

Yes
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Old 05-24-2020, 12:04 AM   #4
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The fuel system is already handling ethanol. Pump gas is E10.

For basic bolt ons, the stock fuel system should be fine. For basic FI, injectors are advised, but not necessary. For high boost pulleys, injectors are needed, and it is worth dropping in a better fuel pump.

For ECUTEK, you need a license ($350+), a bluetooth interface/cable and dongle ($350+) and a flex-fuel tune ($350+). If you add a new performance product then you need a new tune, which means paying for an upgrade ($75-350). It all depends on your tuner. The advantage is that the ECUTEK is a far superior custom tune.

OFT is cheaper.
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Old 05-24-2020, 11:38 AM   #5
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Right on. Will figure out what I need to bolt on before I get to a tune.
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Old 05-24-2020, 11:57 AM   #6
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You can flash back to a stock rom using ecutek as easily as you can with oft. Pick your Ecutek tuner (HRI, Delicious Tuning, Xero Limit, CSG) and then buy their tune package which will come with an Ecutek dongle/cable + Ecutek license and then they’ll remotely tune your car. A header + custom to your car ecutek tune is about the best mod combo to this platform besides tires and seat time at a track.

If you want to go E85 you’ll need a flex fuel kit with the above and your tune will auto read the ethanol content in the gas and adjust automatically without needing to switch maps.
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Old 05-24-2020, 03:56 PM   #7
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I have a 2017 with CSG’s flex fuel kit and tune (Ecutek) and love it. Recently added JDL’s UEL header (with updated tune) and like everybody says, it’s the way to go. I was planning on going FI, but I’m pretty happy with this setup-for now.
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Old 05-24-2020, 04:34 PM   #8
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What other mods do you have in addition to headers? Is there difference between monitors to control AFR?
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Old 05-24-2020, 05:01 PM   #9
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Just an ARK catback, I thought about up pipe and front pipes, but want to keep the noise level down since I’m in CA. Not sure about monitors to control AFR.
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Old 05-30-2020, 05:14 PM   #10
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We also have our combo here: https://www.xero-limit.com/ecutek-bl...l-package.html

With that pricing you're right there at the cost of an OFT+flex fuel kit, but get all the advanced features and custom tuning you get with EcuTek.

Otherwise there's been no issues running e85 from our end since we've been doing it in 2013, I wouldn't fear it!
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Old 06-20-2020, 08:58 PM   #11
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I have a 2017 with CSG’s flex fuel kit and tune (Ecutek) and love it. Recently added JDL’s UEL header (with updated tune) and like everybody says, it’s the way to go. I was planning on going FI, but I’m pretty happy with this setup-for now.
The flex fuel kit would be our PTUNING flex fuel kit that CSG sells. Only place you are able to get our flex fuel kit is ourselves and CounterSpace
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Old 06-25-2020, 05:29 PM   #12
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What are we looking at for power increase? The same compression, so all we can have is what the computer lets us have, I assume.



I have 94 octane pure gas here and it works very well.
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Old 06-25-2020, 05:31 PM   #13
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What are we looking at for power increase? The same compression, so all we can have is what the computer lets us have, I assume.



I have 94 octane pure gas here and it works very well.
On my NA car I see a 20whp difference and on my supercharged car there is a 50~whp difference at the same boost level

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Old 06-25-2020, 07:46 PM   #14
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The flex fuel kit would be our PTUNING flex fuel kit that CSG sells. Only place you are able to get our flex fuel kit is ourselves and CounterSpace
Have you guys figured out the display module freezing on boot at high ambient temperature? I've called numerous times and spoke to a handful of people at PTUNING over the past couple of years (not yet this year though, its only locked up a few times so far), and it was always "going to be looked into," but I never heard anything back.

I love the kit, the flex module works 100% of the time, and I can still access it via bluetooth even if the display module freezes up. Its just a minor annoyance.
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