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I just wanted to add to this thread. I have this same idle surging issue on my 20 GT A10 with a Flex Tune from ID Motorsports (so it’s not just Lund) when running E85 or E blends. If I flash to stock or any straight pump gas tune, the issue goes away. So it’s definitely something to do with Flex...

It’s becoming self aware. This is how it all starts….. Or it thinks that it’s a dot matrix printer. In all seriousness though, I hear all kinds of whining, whirring, and buzzing noises when this car is off (I have a 2020 GT also). It just sounds like some sort of actuation motor. I’ll listen for...

Sold.

True that! I had a good experience with 5 Star on a previous ecoboost vehicle. I’ll check them out.

All very good points everyone. I appreciate the feedback! Like I said, I understand I’m in the minority for not liking the Lund tune as-is. I have genuinely thought about trying to learn and tune myself but just don’t have the time or brain capacity for anything else currently haha!!! Again, not...

Just wanted to give an update on my post. I have no complaints about Lund, their customer service has been prompt and polite. They suggested that I update to a tune file with Stock shifting strategies, so basically an engine-only tune. After paying $700 for an nGauge and their N/A tune, it just...

Yes, but if you buy a tune from Lund they will unlock it for your car. That is my understanding anyways. This nGauge can only be used with Lund tunes anyways, it can’t be converted to an HP Tuners version.

Switched tuners and vendor (local) and no longer will use this tuner. So I’m selling. Works great and Lund is awesome! I will ship to you. Payment via Apple Pay preferred for simplicity sake.

The only thing I’ve found is “Fuel Consumed per Hour”. It adds that field to the Average Fuel Consumption page on the digital cluster. The regular bar gauge becomes a digital number only and places the Fuel consumed per hour next to it.

Excellent suggestion man. Spot on. I actually have a deal worked out with the salesman I bought the car from to purchase/install the FPP Calibration at dealer cost rather than retail. So that's a viable option it sounds like. Thank you.

I love the Digital Cluster in my 2020 Mustang GT (401A). It's great! I've only noticed 1 issue with it though. Issues: 1.) Delay/Freezing when making Cruise Control Speed changes. Such as holding the +/- button down to make 5mph changes. Sometimes the set speed will go blank or freeze so you...

Yeah I've asked a couple of times to support and have been turned down or met with resistance. I understand though, they don't want to go on a wild goose chase with me. Not really sure how to proceed with that. I was thinking about switching tuners to see if another calibrator has figured out...

There’s a couple of things that are bugging me in terms of driveability, all transmission centric. Everything else has been fine. The 2 main things are: 1.) In Normal Drive Mode with Trans (D), the car seems to lug and try to hold on to the gear too long. It seems as though I have travel the...