Unitronic Flex Fuel

[Arelax]

I've seen it teased a few times that this is in development. Is there any solid info on if/when we can expect this release?
Any details on what would be required? I assume a flex sensor and some sort of connection to the OBD port or maybe the P3 gauge?

Really wanting to go unitronic but the whole, pull out my laptop to switch tunes if I can't get E-85 thing is almost making me consider APR.

[rodacollier]

Unitronic E85 tune is available, and I run it. Are you asking about adding a flex fuel sensor to give you real-time readings ?

[joszer]

I think the ability to run E0-E85 on one map.

That's the reason I went with APR, so I can switch my map on the fly from 91 to E85 since my car is my daily. I wanted the ability to quickly switch fuels if I was on a road trip/errand and had a tank of E85 in the car and needed to switch to 91.

[Arelax]

As Joszer said, I'm asking about a true Flex fuel tune. Where you can fill up with 91, 93, or e85 and the tune adjusts itself for whatever the final mixture is. That way you dont need to load a different tune if you switch from 93 to e85 or vice versa.

[John@Unitronic]

I've seen it teased a few times that this is in development. Is there any solid info on if/when we can expect this release?
Any details on what would be required? I assume a flex sensor and some sort of connection to the OBD port or maybe the P3 gauge?

Really wanting to go unitronic but the whole, pull out my laptop to switch tunes if I can't get E-85 thing is almost making me consider APR.

Flex fuel is in development. We had originally hoped to roll this out in Q1 2021, but it looks like Q2 2021 is more realistic at this point. We're packaging it up with some other cool features, add-ons, hardware for CAN-bus integration, iOS/Android applications, more data logging capabilities at faster speeds, and much more. I'm confident you'll really enjoy it.

In the meantime, thousands of our customers use our UniCONNECT+ cable and application via a Windows-based laptop each and every day, with a mobile hotspot, in the event that a WiFi connection is not available, without any issues. Let me know if you have any other questions and I'd be glad to help!

[Arelax]

Flex fuel is in development. We had originally hoped to roll this out in Q1 2021, but it looks like Q2 2021 is more realistic at this point. We're packaging it up with some other cool features, add-ons, hardware for CAN-bus integration, iOS/Android applications, more data logging capabilities at faster speeds, and much more. I'm confident you'll really enjoy it.

In the meantime, thousands of our customers use our UniCONNECT+ cable and application via a Windows-based laptop each and every day, with a mobile hotspot, in the event that a WiFi connection is not available, without any issues. Let me know if you have any other questions and I'd be glad to help!

John, thank you for that info! I'll use the method you described in the meantime if I need to switch on the spot.

Can you provide any more details about the integration method?
I'm looking to buy a P3 gauge with ethanol sensor, but I'd hold off if you tell me that your flex tune will require some hardware that makes that obsolete.
Thanks!

[henhead]

Can you provide any more details about the integration method?
Thanks!

Ditto on the question above. Is there a recommended ethanol sensor we could buy and install now to get ready or will any sensor that has a 5v signal out work? Will a kit be available for those that don't already have one?

I am definitely looking forward to Flex Fuel on this platform since I only have 1 E85 pump in my area!

[NoggieRS5]

Ditto on the question above. Is there a recommended ethanol sensor we could buy and install now to get ready or will any sensor that has a 5v signal out work? Will a kit be available for those that don't already have one?

I am definitely looking forward to Flex Fuel on this platform since I only have 1 E85 pump in my area!

https://www.fuel-it.com/flex-fuel-se...ooth-analyzer/

Bluetooth and with App

[myrder]

dyno spectrum does full flex fuel reading a sensor and adjusting the map. Works perfect.

[crazyprac]

I just installed bluetooth fuel it sensor for my unitronic tune. I really hope I don't need additional hardware to run a true flex fuel.

[tegxsi]

I've been using Dyno Spectrum DS1 with ethanol sensor and it's been working well so far...
With custom tuning capability and standalone ECU like features, It's hard to beat.

I just installed bluetooth fuel it sensor for my unitronic tune. I really hope I don't need additional hardware to run a true flex fuel.

John already mentioned "CAN-bus integration" so that probably means there is more hardware involved. Might be similar to how DS1 reads in the ethanol content through OBD dongle.

[John@Unitronic]

John, thank you for that info! I'll use the method you described in the meantime if I need to switch on the spot.

Can you provide any more details about the integration method?
I'm looking to buy a P3 gauge with ethanol sensor, but I'd hold off if you tell me that your flex tune will require some hardware that makes that obsolete.
Thanks!

We recommend our Unitronic P3 Gauge for the RS3 or our Unitronic P3 Gauge for the TTRS, along with the Ethanol Content Sensor and Ethanol Content Voltage Adapter. This hardware will be compatible with our forthcoming solution, and offers a multitude of additional functionality in the meantime and in the future.

[Arelax]

We recommend our Unitronic P3 Gauge for the RS3 or our Unitronic P3 Gauge for the TTRS, along with the Ethanol Content Sensor and Ethanol Content Voltage Adapter. This hardware will be compatible with our forthcoming solution, and offers a multitude of additional functionality in the meantime and in the future.

Thank you for the response John

[RSpeeds]

Flex fuel is great. Not having to flash between maps or measure ethanol mixtures means you get to spend more time enjoying your car. It's been working great with the DS1.

[GTCRS3]

We recommend our Unitronic P3 Gauge for the RS3 or our Unitronic P3 Gauge for the TTRS, along with the Ethanol Content Sensor and Ethanol Content Voltage Adapter. This hardware will be compatible with our forthcoming solution, and offers a multitude of additional functionality in the meantime and in the future.

And there goes another pay cheque. Thanks “bro”.




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[Jester2893]

dyno spectrum does full flex fuel reading a sensor and adjusting the map. Works perfect.

Came here to say this + the fact that I can switch tunes with a iPad or iPhone and not need a laptop.

[S4BB]

Came here to say this + the fact that I can switch tunes with a iPad or iPhone and not need a laptop.

Unitronic - this please.

[SlowSedans]

Ds1 flex working flawless on my daily driver rs3 in temps from -10f to 109f and for crap to great fuel. The boost, timing, injector balance, etc all adjust on the fly, automatically by having the ethanol sensor kit integrated into the OBD port. Hands down the best flex system I have ever used on an Audi and thats saying something because I have made my own in the past.

[comingabriel]

We recommend our Unitronic P3 Gauge for the RS3 or our Unitronic P3 Gauge for the TTRS, along with the Ethanol Content Sensor and Ethanol Content Voltage Adapter. This hardware will be compatible with our forthcoming solution, and offers a multitude of additional functionality in the meantime and in the future.

Great, about 1.75 yrs ago you had suggested fuel-it. Was prepping to get it out of the closet soon, and install it. But, I don’t like my obd port being taken up by anything other than a vcds or better. So, I have no idea what I will do...

[Dubonfire]

ima play devil advocate but.... I don't care about flex-fuel. you either run 93 or some sort of e85 .... no half-ass e42 or e53.

i would prefer:
Map Switching on the fly (probably easier to implement).
Rolling anti-lag.
No pop and bang option
etc

[John@Unitronic]

Great, about 1.75 yrs ago you had suggested fuel-it. Was prepping to get it out of the closet soon, and install it. But, I don’t like my obd port being taken up by anything other than a vcds or better. So, I have no idea what I will do...

The guys at P3 are great to work with, listen to your feedback, and are willing to work together with us. We offer a Hardware Harness that will keep the OBD-2 port free. (Although you'll need to put the gauge in Conf mode to allow OBD-2 comm's.)

[John@Unitronic]

i would prefer:
Map Switching on the fly (probably easier to implement).
Rolling anti-lag.
No pop and bang option
etc

I think you'll enjoy what we have upcoming!

[biglipps66]

John, does the P3 gauge have the ability to read short term fuel trims? I need a gauge to display the short term trims when spraying water/methanol, it's easier to use a gauge as a quick readout vs logging sometimes. Thoughts?

[Jester2893]

ima play devil advocate but.... I don't care about flex-fuel. you either run 93 or some sort of e85 .... no half-ass e42 or e53.

i would prefer:
Map Switching on the fly (probably easier to implement).
Rolling anti-lag.
No pop and bang option
etc

You do realize “some sort of e85” can be lower than “85” right?

Flex fuel tune, would only help you for the cases where you got a shit batch of e85 etc.

A good tune regardless of who supplies it would adapt in real time to the changes in fuel. DS1 is the only tune right now that supports that.

[Dubonfire]

You do realize “some sort of e85” can be lower than “85” right?

Flex fuel tune, would only help you for the cases where you got a shit batch of e85 etc.

A good tune regardless of who supplies it would adapt in real time to the changes in fuel. DS1 is the only tune right now that supports that.

You can run with up to e60 or e65 without any issue already.

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[Jester2893]

You can run with up to e60 or e65 without any issue already.

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Understood.

However, compare a log between a tune that supports real time flex fuel and one that doesn’t.

Timing/knock correction will look better on the flex fuel one.

[henhead]

I guess I'll just wait to see what the final solution looks like. I'm not in love with the idea of having to buy a gauge in order to support flex fuel, that's how I'm reading things anyway.

[John@Unitronic]

John, does the P3 gauge have the ability to read short term fuel trims? I need a gauge to display the short term trims when spraying water/methanol, it's easier to use a gauge as a quick readout vs logging sometimes. Thoughts?

It does not, currently. Where is/are your Water/Meth nozzle(s) located at?

[John@Unitronic]

I guess I'll just wait to see what the final solution looks like. I'm not in love with the idea of having to buy a gauge in order to support flex fuel, that's how I'm reading things anyway.

That P3 gauge will not be required for our forthcoming Flex Fuel offering. I posted the links in reference to the OP inquiring on an Ethanol Content Analyzer to use in the meantime. As mentioned above, we'll have our own totally plug-and-play hardware for CAN-bus integrating the ethanol content.

[henhead]

That P3 gauge will not be required for our forthcoming Flex Fuel offering. I posted the links in reference to the OP inquiring on an Ethanol Content Analyzer to use in the meantime. As mentioned above, we'll have our own totally plug-and-play hardware for CAN-bus integrating the ethanol content.

That is great news. Thanks John! Definitely looking forward to Q2

[Arelax]

ima play devil advocate but.... I don't care about flex-fuel. you either run 93 or some sort of e85 .... no half-ass e42 or e53.

i would prefer:
Map Switching on the fly (probably easier to implement).
Rolling anti-lag.
No pop and bang option
etc

the benefit is not so you can run e42 or e53,. its so that you dont ever have to run your tank down and switch maps. you fill up with e85, or with 93, either way youre good to go.

[NRDALRT]

I think you'll enjoy what we have upcoming!

Super excited. Now just someone please get the ngk-9 plugs back in stock so those of us rs3 noobs can go corn lol

[biglipps66]

It does not, currently. Where is/are your Water/Meth nozzle(s) located at?

It will be located right in your Uni intake elbow, pre turbo. I have several vehicles that are sprayed, all top notch setups. I wish I could tune this car for it, but I'm not going to go the Syvecs route as much as I would love to. I'll just run the data logs for fine tuning the nozzle size.

[biglipps66]

Super excited. Now just someone please get the ngk-9 plugs back in stock so those of us rs3 noobs can go corn lol

I've had a couple small hiccups on the stock plugs on my e79-83 test, but nothing to be overly concerned about. I do live in a much warmer climate though. Soon enough things will all be stocked again.

[Joecool]

@John,

I take it the Uni flex fuel solution is for DAZA engines only?? I run the Uni 1+ ECU tune on a DNWA engine, so interested to hear what you guys are doing here, before going DS1.

[brobst]

It will be located right in your Uni intake elbow, pre turbo. I have several vehicles that are sprayed, all top notch setups. I wish I could tune this car for it, but I'm not going to go the Syvecs route as much as I would love to. I'll just run the data logs for fine tuning the nozzle size.

You will spray the turbo fins on the intake side before the IC? Thats news to me.
Never done w/m personally but have always seen it around the IC area

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[John@Unitronic]

Super excited. Now just someone please get the ngk-9 plugs back in stock so those of us rs3 noobs can go corn lol

We have them in stock, ready to ship.

[John@Unitronic]

It will be located right in your Uni intake elbow, pre turbo. I have several vehicles that are sprayed, all top notch setups. I wish I could tune this car for it, but I'm not going to go the Syvecs route as much as I would love to. I'll just run the data logs for fine tuning the nozzle size.

I'll have to trust that you know the risks associated with that sort of injection strategy and have fabricated a nozzle holder that allows for injection right on the compressor nut to avoid blade tip erosion. I would be curious if the nozzle holder's flow restriction and subsequent efficiency loss would outweigh the potential benefit of the pre-comp. injection.

[Dubonfire]

It will be located right in your Uni intake elbow, pre turbo. I have several vehicles that are sprayed, all top notch setups. I wish I could tune this car for it, but I'm not going to go the Syvecs route as much as I would love to. I'll just run the data logs for fine tuning the nozzle size.

For RS3 the usual setup for Water meth is sprayed in the lower tube after the intercooler or via throttle body spacer. Billet intake manifold with jet in each runner might be available too but I sincerely doubt it.

I don't know much but a jet before the turbo seem to be a bad idea. In certain supercharger application like Zl1 Camaro I think it's possible.



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[Phayl]

I've had a couple small hiccups on the stock plugs on my e79-83 test, but nothing to be overly concerned about. I do live in a much warmer climate though. Soon enough things will all be stocked again.

Running stock plugs on E is a good way to melt one and grenade an engine. @HardwayLearning on youtube did this, and their name is rather appropriate. F.