Why did you leave lund?

[robvas]

I'd just run 93 on a road trip. For the fuel mileage alone.

Sponsored

 

[wingnutt]

I'd just run 93 on a road trip. For the fuel mileage alone.

depends…there are large swaths of the country that don’t have 93!

i just keep a couple bottles of Boostane in the go-bag

 

[Zrussian13]

From the little bit I've read on Flex tuning it wasn't real time flex. It was based on reading the O2 sensor to determine E85 content which introduces more margin for error.

Real time flex has a sensor in your fuel rail that can can be used to adjust for E content in real time. I know PCMTEC supports this.

I'm sure someone with a much deeper knowledge base will be along shortly. After all I'm just an average knuckle dragging ape with a basic understanding!

Edit: I found the video for the PCMTEC solution.

Its inferred very similar to the logic ford uses in their flex vehicles that come with warranties. I get using a sensor would be more accurate and adjust quicker but it still works.

 

[Zrussian13]

Im not watching a douchy Alex video sorry but he was saying that same crap back when every other tuner there said it was fine to run the flex tune full time as long as you let it adjust after each fill up with different fuel. Again, I ran mine on and off for 3 years with no issue. I preferred the e85 and e54 tunes I had simply because the down low timing was night and day.

 

[Zrussian13]

For Gen3, I believe Lund didn't have access and/or didn't know how to make flex work right in the Mustangs due to missing parameters in hpt. The video above is a load of baloney. He seems to a) have lots of air leaks and b) doesn't understand how the OEM diagnostics and learning routine really works. Ford was pretty smart about it and air leaks can't cause ethanol learning problems in all but the most remote obscure situations.

This is interesting because my 19 had a lund flex tune that worked well. It was back when they used sct devices though. Could thst be the difference?

 

[JuniorN]

Im not watching a douchy Alex video sorry but he was saying that same crap back when every other tuner there said it was fine to run the flex tune full time as long as you let it adjust after each fill up with different fuel. Again, I ran mine on and off for 3 years with no issue. I preferred the e85 and e54 tunes I had simply because the down low timing was night and day.

I have a flex tune aswell , not by Lund though . I only posted the video because you said you weren’t really sure why they stopped offering it .

 

[Zrussian13]

I have a flex tune aswell , not by Lund though . I only posted the video because you said you weren’t really sure why they stopped offering it .

I meant not sure of a good reason!

 

[engineermike]

This is interesting because my 19 had a lund flex tune that worked well. It was back when they used sct devices though. Could thst be the difference?

I doubt it. The problem is that they would prematurely lock in to the new fuel before the fuel system was fully purged. This caused a couple of things to happen, one being improperly learned ethanol resulting in fuel trims being off, what he probably thought was due to an air leak. The other issue is it would take a couple of tanks for it to finally learn the right number, which I’ve heard people talk about, so it tracks.

 

[Swtbabybilly]

Thanks for all the responses guys I appreciate the insight, from what im getting most people switched because of lund not supporting all company's and demanding you buy specific brands (which i can see both sides of the argument) and customer service.

Sponsored