Flex fuel Tuning

[junits15]

Another vote for PCMT flex solution. Lund is selling user selectable flex right now, so you can install an inline ethanol sensor and once it stabilizes you just enter number from your gauge in using your cruise buttons and the tune will be perfectly dialed in.

If you're crafty and willing to learn you can make your own setup that adjusts automatically. I suspect Lund doesn't want to sell fuel parts to enable that.

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[GL95]

Another vote for PCMT flex solution. Lund is selling user selectable flex right now, so you can install an inline ethanol sensor and once it stabilizes you just enter number from your gauge in using your cruise buttons and the tune will be perfectly dialed in.

If you're crafty and willing to learn you can make your own setup that adjusts automatically. I suspect Lund doesn't want to sell fuel parts to enable that.

Why go through the effort of installing a sensor for flex fuel and settle for user flex, can flex is 5 minutes of extra work

 

[junits15]

Why go through the effort of installing a sensor for flex fuel and settle for user flex, can flex is 5 minutes of extra work

It allows the user to handle messing with fuel lines and takes the liability off Lund racing

 

[GL95]

It allows the user to handle messing with fuel lines and takes the liability off Lund racing

Go with a better tuner then, nobody else seems to have any issues with offering it

 

[K4fxd]

Lund just doesn't like helping people. I'm sure the reason they don't offer the can-bus is they will get too many install questions that they won't answer.

 

[GL95]

Lund just doesn't like helping people. I'm sure the reason they don't offer the can-bus is they will get too many install questions that they won't answer.

Even weirder considering it's 1 drop down change from a user flex tune

 

[mejohn50]

Even weirder considering it's 1 drop down change from a user flex tune

Technically, they could just simply always select the CAN-bus flex fuel option and tell people it’s user-select. It functions the same when there’s no sensor connected. That way, when/if they decided to widely offer CAN-bus flex people could just plug the sensor in and it just works.

 

[junits15]

Go with a better tuner then, nobody else seems to have any issues with offering it

Oh this isn't an issue for me, I tuned it myself and I have CAN flex working, i'm just speculating why we dont see it from Lund.

 

[WildHorse]

why we dont see it from Lund

LUND has stated many times, it's there way, or the highway.
They think all there customers are stupid when they ask legit questions
about the flex tune.
They don't want the hassle.
Pick which one suits best.

 

[K4fxd]

LUND has stated many times, it's there way, or the highway.
They think all there customers are stupid when they ask legit questions

This 100%

 

[junits15]

LUND has stated many times, it's there way, or the highway.
They think all there customers are stupid when they ask legit questions
about the flex tune.
They don't want the hassle.
Pick which one suits best.

I have to take their side on this one.

Lund tunes huge numbers daily:

• If even one car burns down because of an improperly assembled or designed flex fuel kit it would be a big deal.
• The Install for the CAN bus flex system isn't straightforward, you need to cut into the CAN bus somewhere, that has really high potential for disaster. If you break that can bus link your car may not even start until its fixed.
• The kit isn't going to be cheap enough, the Zietronics ECA 2 CAN kit alone is $420, and that does not include any hoses or mounting hardware. You need an ethanol sensor adapter which is another $100, then you need requisite hoses with proper ends crimped on. Those hoses will need to vary with different applications. Then Lund will only offer this if they can make profit on it so they'll add some more on top too. I would guess that this kit would easily cost $700 before you buy the tune. That's a hard sell.

User flex puts all the onus on the end user, and it requires them to do zero additional development work. They just crank out a new tune and its over and they can guarantee that any failures related to fueling after the fact are not caused by their product.

If it were me I'd offer the same thing, but I'd enable the CAN flex and allow people to build their own kit with no support.

 

[K4fxd]

If it were me I'd offer the same thing, but I'd enable the CAN flex and allow people to build their own kit with no support.

You could sell a kit.

It would be the same liability as selling shocks or oil pump gears or return fuel systems or any other part, and the doofus installs them wrong. Zero liability. Lund or anyone selling a kit would only be liable if they installed it. Same as any shop.

If I were younger I would seriously consider selling a kit.

 

[mejohn50]

You could sell a kit.

It would be the same liability as selling shocks or oil pump gears or return fuel systems or any other part, and the doofus installs them wrong. Zero liability. Lund or anyone selling a kit would only be liable if they installed it. Same as any shop.

If I were younger I would seriously consider selling a kit.

I think the greater point to the post @junits15 made is that Lund is kinda like a large corporation or government entity. They take a long time to adapt to change that dramatically alters their current way of doing business.

Regarding a kit...I have put together what is likely, at least currently, the cleanest install of the flex fuel sensor and Zeitrnoix CAN-bus module. No CAN-bus cutting, no OBD port adapters, no splicing, no wire taps, and it's completely reversible. It uses existing mounting holes under the hood and can be adapted to OEM lines or aftermarket fuel systems. Power, ground, CAN-bus connection, and fuel system connection are all plug and play. It uses an off the shelf flex sensor to fuel line adapter and a proprietary bracket I designed and had made/powdercoated by Send Cut Send. It's really nice.

I have had several reconizable names in the S550 modifying market express interest in what I put together, but several things have stopped me from proceeding. The main one being that my life is in a bit of turmoil right now thanks to the United States Government (an upcoming military move) and the second is that there doesn't appear to be an enormous market for kits yet. I am not familiar with any online retailer openly listing a kit for sale, and we are well over a year on from this fucntionality being released to the market. I have said it before and I will say it again, the tuners own the modifying market for this car. If the tuners don't support something, then it's simply not viable. I suppose I could start tuning cars and offer my own stuff to my customers, but I don't think anyone would want to pay what I would charge.

With all that said, I hope more and more tuners/shops/retailers/etc start supporting CAN-bus flex fuel and making/selling kits. I have had really good success with it on my 2019 GT when it was supercharged and now in nearly stock trim along with another similarly modified NA 3rd gen coyote.

 

[GL95]

I have to take their side on this one.

Lund tunes huge numbers daily:

• If even one car burns down because of an improperly assembled or designed flex fuel kit it would be a big deal.
• The Install for the CAN bus flex system isn't straightforward, you need to cut into the CAN bus somewhere, that has really high potential for disaster. If you break that can bus link your car may not even start until its fixed.
• The kit isn't going to be cheap enough, the Zietronics ECA 2 CAN kit alone is $420, and that does not include any hoses or mounting hardware. You need an ethanol sensor adapter which is another $100, then you need requisite hoses with proper ends crimped on. Those hoses will need to vary with different applications. Then Lund will only offer this if they can make profit on it so they'll add some more on top too. I would guess that this kit would easily cost $700 before you buy the tune. That's a hard sell.

User flex puts all the onus on the end user, and it requires them to do zero additional development work. They just crank out a new tune and its over and they can guarantee that any failures related to fueling after the fact are not caused by their product.

If it were me I'd offer the same thing, but I'd enable the CAN flex and allow people to build their own kit with no support.

You do not need to cut into the can bus, and there is no developmental work it's 1 drop down

 

[junits15]

You do not need to cut into the can bus, and there is no developmental work it's 1 drop down

there is a lot of development involved.

You’re forgetting that they have to design a custom bracket for the sensor holder, hoses and wiring harness. The hoses have to change depending on if the car is SC or not.
the ECA has to sit somewhere, you’re not just wiring the sensor directly to the ECU. The ECA needs switched fused power which has to come from either the engine bay or the passenger footwell, while the sensor has to go on the drivers side. That wiring is a pain.

It’s not a trivial thing to come up with, it has to be perfect because it’s a fuel component.

The need a fabricator willing to make the brackets, a company willing to make wiring harnesses, a company to supply the hoses. Are they gonna use a radium ECA holder and apply markup to cover the cost? They have to kit all these parts, and worse they have to verify that it works every single time.

Then, they need to provide tech support for the endless swarm of people who installed it wrong.

I do not blame Lund at all for not offering it. If someone else starts selling it I bet they’ll support it though. I love mine but I’m willing to deal with a difficult install.

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