Confused about Lund tuning

[ponyboy0123]

Hey guys, forgive me for my ignorance on this I recently just bought my GT. I’m looking to get a flex tune for my car preferably through Lund. I’ve gone on their website to look at the options and I only see one “HP Tuners RTD+ with 2018 Mustang GT custom tune. When I go to select the options it has an option for “NA E85 Tune (includes pump gas tune to start with)” is this a flex fuel tune or? I’m just confused because there’s no mention of flex fuel and I don’t want to have to run e85 all the time. Any help with this would be appreciated.

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[nnnnnn]

I'm not tuned by Lund but I have heard in the past several times from their PR YouTube guy, Alex, via his video that they don't do flex tunes anymore. So you can ask them about it but that's what I have heard the guy say.

 

[bullitt5566]

I'm also considering an E85 tune for my GT350 and it is confusing. The way I understand it is there are two E85 tuning options, Flex-Fuel and E85. The Flex-Fuel tune enables you to run any combination of E85 and gasoline because the ECU recalculates the ethanol content after the tank is filled. The flex-fuel does not provide the full benefit of additional timing afforded by E85. A straight E85 tune provides the full benefits of E85 because the tune assumes you are using E85 (doesn't calculate) and the full spark advance is provided. Ideally, I think having both the Flex and E85 tune available would be perfect. Run the E85 tune when you are sure you have E85 in the tank and the Flex when you are unsure. I believe the stock ECU has the capability to determine ethanol content and the tuning device can display it.

 

[Brandon91]

From what I understand they no longer offer flex fuel tunes. But they do have multi tune that allows you to change your tune on the fly and I think you can adjust the ethanol content. I could be wrong. I would email them and ask.

 

[K4fxd]

https://www.mustang6g.com/forums/threads/beware-of-lund.182628/

https://www.mustang6g.com/forums/th...ger-supporting-lund-tuning-after-9-27.180907/

Make your own decision.

 

[PC_GUARD]

From what I understand they no longer offer flex fuel tunes. But they do have multi tune that allows you to change your tune on the fly and I think you can adjust the ethanol content. I could be wrong. I would email them and ask.

I dont think he's their pr guy. He just works for them and has a yt channel

 

[tdstuart]

Got tunned by them a few months ago.

They will give you a flex tune when you get an e85 tune.
You can always message their support and ask, but with me I got a 91 tune, flex tune, e85 tune, and a e85 ghost cam tune.

 

[cahouston]

I also got a Lund tune a few months back. I received 93, flex, and e85 tunes. Started on 93, logged to their instruction, and once reviewed by them, they send the flex tune. Ran out the 93, filled up with e85 (tested e90), waited for it to learn, and once AFR at idle was under 10.0, I logged again. Once the logs were reviewed and all looked good, they sent the e85 dedicated tune. Loaded it, logged again, and got the thumbs up on the logs.

Brandon there was always quick to respond, gave good answers to my questions, and checked in on me after the all-clear of the final tune just to make sure things were going well and I wasn't having any drivability issues.

No issues to report. They do state that the flex tune is a transition tune between 91/93 and E85 and isn't meant to be a full-time tune.

 

[nnnnnn]

Wouldn't it be better to get an E85 tune, install pro flex commander and let it do the flex part for you? That's probably a safer way to do it.

 

[offroadkarter]

No issues to report. They do state that the flex tune is a transition tune between 91/93 and E85 and isn't meant to be a full-time tune.

Which is funny because I remember back when I got my tune and ngauge, it was said that the E85R tune was very close to the flex fuel tune, it just had a little more timing in the lower RPM band. I was never told to only use the flex fuel tune to transition over.

I know the ghost cam tunes were always said to not be a full time / daily driven tune.

 

[danny0441]

Hey guys, forgive me for my ignorance on this I recently just bought my GT. I’m looking to get a flex tune for my car preferably through Lund. I’ve gone on their website to look at the options and I only see one “HP Tuners RTD+ with 2018 Mustang GT custom tune. When I go to select the options it has an option for “NA E85 Tune (includes pump gas tune to start with)” is this a flex fuel tune or? I’m just confused because there’s no mention of flex fuel and I don’t want to have to run e85 all the time. Any help with this would be appreciated.

I can answer this as someone who is currently going through the tune process with them and someone who wanted the flex fuel tune. From what I was told gen 3 cars are finicky with learning ethanol content that coupled with people not following their instructions has led to them not advertising the flex tune. From what I was told they will give you a dedicated e85 tune and dedicated pump gas tune ie 91,93. I was told that if I really wanted flex they would send me a tune however would not chase issues at the moment. I ended up just going with a dedicated tune for each as the dedicated e85 tune is going to perform better than a flex tune anyways and I have no intention of swapping between 93 and e85 often.

 

[babrams3]

Give them a call, Lund is pretty good about getting on the phone and discussing discrepancies

 

[K4fxd]

Give them a call,

ROFL!

 

[Zrussian13]

Never seen Lund answer a call but if you send a request on their website you should get a fast answer. I always have.

 

[babrams3]

oh shoot, the sarcasm didn't come across on that one lol

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