True Flex Fuel Tune

[stang17]

Anyone out here using PCMtec to run true flex fuel. I see Lund, OZ tuning, and PBD are all listed on their website as workshops, but none of the vendors have anything mentioning this yet.

This appears to be the ultimate tuning setup. No more flashing, no more testing fuel, just fill up at pump and let her rip.

Sponsored

 

[junits15]

Oh this is very interesting, I'll be keeping an eye on this.

I have major issues with the stock inferred flex system, this would be a perfect system.

I'm not familiar with PCMtech, is it a custom tuning platform? Or just custom software to be flashed with HPT? This seems brand new as of monday, might just need some time for this proliferate through the market. I'm sure this will take off, this is much better than the current flex system.

 

[K4fxd]

I'm not familiar with PCMtech, is it a custom tuning platform?

I've looked at it, it is custom. They are from Aus and looks like they are giving the finger to the EPA. I'd like to use their software but it is very expensive for someone who only tunes his own car.

 

[junits15]

I've looked at it, it is custom. They are from Aus and looks like they are giving the finger to the EPA. I'd like to use their software but it is very expensive for someone who only tunes his own car.

I just saw the exact same thing, $3300AUD for self tuning. Yikes. I would like a cheap self tune option as well.

I’m going to keep an eye on it, maybe more options will come out later

 

[mejohn50]

I've looked at it, it is custom. They are from Aus and looks like they are giving the finger to the EPA. I'd like to use their software but it is very expensive for someone who only tunes his own car.

I just saw the exact same thing, $3300AUD for self tuning. Yikes. I would like a self tune option as well.

I’m going to keep an eye on it, maybe more options will come out later

I have emailed them several times asking for cheaper single-car options like they have for the Australian market cars. They have told me they currently have no interest in making packages like that available for US market cars. They said, more or less, that the newer Mustang tuning scene is vastly different and there isn’t enough desire from the community for those sort of packages.

If you are truly interested I would urge you to email PCMTEC support and ask for them to make single-car enthusiast packages for US market cars available.

I’ve also been considering emailing them and asking how many computers could hypothetically use one license for the workshop editor package. Assuming it’s more than one, and since it isn’t tied to a single hardware dongle, a few people could buy one license and each get their own hardware.

Additionally, as of right now, their custom OS is only available to those who meet some unspecified prerequisites. So this option might not be available to you even if you spent the money for the full workshop package.

Finally, and again as of right now, if you are running anything other than an OEM Ford operating system they currently do not support it. So if you are running a Whipple or Roush OS you’d need to change to an OEM Ford OS. They did say this could change with enough feedback from the community, but since their “community” on US market cars is just the big name tuners…I don’t think there will be enough desire for that anytime soon.

 

[Mikepol2]

I run a Livernois flex tune. Same thing, just fill up at the pump and let it learn, no fuel testing.

 

[mejohn50]

I run a Livernois flex tune. Same thing, just fill up at the pump and let it learn, no fuel testing.

Does is use an ethanol sensor? That’s the big draw to this. Ford’s OEM flex logic relies on feedback from the oxygen sensors to learn. It works, and it can be made to work well, but this eliminates some of the variables from the inferred OEM logic.

 

[stannypack]

Does is use an ethanol sensor? That’s the big draw to this. Ford’s OEM flex logic relies on feedback from the oxygen sensors to learn. It works, and it can be made to work well, but this eliminates some of the variables from the inferred OEM logic.

What's the negative to the inferred logic? Just that you can't beat on it for the first 10 mins after filling up?

 

[WildHorse]

What's the negative to the inferred logic?

Expecting something, then it's not what you expected. Kinda like a blind date. Haha.

 

[K4fxd]

What's the negative to the inferred logic?

It can be 10% off on the E content if it learns too quick. For the inferred system to really work it needs to be a return system. I work around this by making the learning time longer.

 

[stannypack]

It can be 10% off on the E content if it learns too quick. For the inferred system to really work it needs to be a return system. I work around this by making the learning time longer.

ooh is that something I should/could ask for my custom tune from Juggernaut?

 

[K4fxd]

ooh is that something I should/could ask for my custom tune from Juggernaut?

He can do it, he might have another work around.

 

[stang17]

Scary thing about inferred is if you ever develop an exhaust leak it can throw off the 02s and then your potentially setting yourself up for a very bad day.

 

[mejohn50]

What's the negative to the inferred logic? Just that you can't beat on it for the first 10 mins after filling up?

- I don’t think the Ford logic can ever truly be “set it and forget it” in a boosted application. How do you know it’s learned? How do you know what the ethanol content is? You have to mess with it. With that said, I have some of the same concerns with the PCMTEC implementation. Need to know more about if it’s real time or if it learns and then stays at that content until the next fill up (or other threshold).

- As @K4fxd said, ethanol content can be off quite a bit if it learns too fast, especially with a small fuel level change, like from 3/4 tank of 93 adding 1/4 tank of E85. There are ways to address it in the calibration, but if the PCMTEC system is constantly adjusting ethanol content this isn’t an issue at all.

- Theoretically, a vacuum leak concurrent with a refuel (unlikely but not impossible) could cause the inferred logic to learn incorrectly and you might not know it.

 

[K4fxd]

Theoretically, a vacuum leak concurrent with a refuel (unlikely but not impossible) could cause the inferred logic to learn incorrectly and you might not know it.

Ford trusts it enough to sell many cars and trucks with this system. I think this is why there is such a large window in the fueling corrections.

Sponsored