jimj3125

I have an SCT tune from Bamma/American Muscle. Is there anyway to fully remove the tune? I am worried that I will have my warranty voided.
Any thoughts on this?

texastboneking

What year vehicle?

jimj3125

Sorry, 2011 Mustang GT, manual, base model.

texastboneking

Too late if you put it on. It's tracable. There is no way to remove it. Only way I could see working is if you buy a new pcm and have it programed for your vehicle. But be ready to pay a couple grand.

yugoboss

My friends is the service manager for a gm dealer, They do it all time, especially on Diesel trucks.

texastboneking

The pcm don't forget that it had been tuned. and nothing you do will erase that it had been tuned. Good luck when you try to make a warranty claim lmao.

AlsCobra

The PCM may have a flash counter. Not sure. But it won't tell where the flash came from. Not sure. From what I remember at GM, disconnect the battery and touch the positive and negative cables together, that should erase any learned data.

texastboneking

There is a new pcm flash counter built into the pcm. It counts the number of times the pcm has been flashed.

We can compare the flash count with the vehicles history to see if someone other than Ford has messed with the pcm.

Say there is a pcm update out. And a mustang gets the update. The pcm will show that it has been flashed again. But we can look in the history and see when it was flashed.

When a vehicle comes in with 15 flashes on the flash count and there has only been one update and the history shows it has received the update then we know the vehicle should show 2 flash count and not 15. It's pretty simple and straight forward.

Secondhandloser

How do you differentiate between a hard reset? How about a failed factory flash that increments the counter but must be re-performed?

texastboneking

Hard resets do not count as a reflash therefore the counter ignores them. A hard reset clears the kam. But does not reflash the pcm. And if there is a failed flash the tech records that in the vehicle history

Secondhandloser

From what I've seen, a hard reset on the PCM will reset flash count to 1

More importantly, since the counter is unprotected...what do you do about people resetting it?

Lots of techs fail to record such things...

texastboneking

To access the flash count one must obtain a rotunda ids. Even then we cannot reset the flash count.

Flash count is not stored in the kam so no hard reset will not clear it.

And if someone figures out how to hack it then good job. They are now able to claim warranty

Easiest way to get rid of it is to order a pcm through ford and install it. And I'm not completely shure that will even work.

Matty27x

So I'm enjoying the back and forth here, thanks. Quick question for you all, I had a SCT tuner (93 octane) tune on my 2011 5.0 for about 9 months, after which i could noticably hear a misfire. I don't have a lot of knowledge when it comes to fixing mustangs so I took it into Ford. Ford had to flash it back to stock, they removed my CAI, and told me that the tune caused the engine to run too hot and it ruined the coils, also caused me to drop a cylinder. Anyone else with similar problems or experience? I got a memo then from Ford telling me that tuners will void my warranty...I want to reinstall as the car ran like a dream before...but is it worth it?

DaSFGiants4Life

What tune did u have on it? Since that was a while ago tuners messed with the knock sensors to push these 5.0s to the limit. They have since learned from their mistakes and have corrected their errors.

Secondhandloser

It's not difficult to hack the firmware. Passing a reset command will take care of it.


More to the point, one without any skill could readily sc the PCM leaving no evidence.

texastboneking

As far as I know its in a seperate part of the pcm module and not the pcm itself. A standard one can not locate it. Requires fords ids. Not saying it isn't hackable. But as far as I know of it has yet to be hacked. And based on some ppls post here I would not say some ppl could easily do it. The tool to access the counter is not cheap. Several grand actually.

If you can do it I say go for it. Sure you could make some good money with that power.

Secondhandloser

I've got no intentions to tune personally. Just saying, it's not difficult to reverse engineer the setup. And of course, don't be surprised when a huge number of customers come in with smoking pcms

Matty27x

I'd have to check. I had the shop do it after the CAI was installed. He told me it was a 93 octane tune, also eliminated skip shift. I had heard elsewhere that there has been a documented cylinder problem with the 5.0 so hoping tune had nothing to do with it.

Flagstang

all the documented cylinder problems were due to tune.

texastboneking

So is this position you were talking about still open?