What have you done to your mustang today?

Gabe

Whippled Coyote
Joined
Aug 7, 2011
Posts
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Location
NC
Been in contact with shop #2 on my car -- they want to go back to stock and start over.

Quick recap -- after getting the supercharger installed and 800 miles of driving, a couple of the emissions tests weren't completing. Shop #1 that did the install did the initial tuning, but after some driveability issues they couldn't figure out, they had to outsource to shop #2 as 1) they had other projects that were backing up and 2) they were at a loss.

Shop #2 was able to address some driveability issues, but still can't get the O2's to read. They checked the tune, yes they're turned on. They checked the sensors, yes they're good. They checked the O2 wiring harness, yes it's good. They checked the main wire harness, yes that's good too.

At this point they want to return my tune to stock and rebuild. Shop #1 used SCT and that's the handheld tuner I have (X4), shop #2 uses HP Tuners, and I guess shop #2 must've tried to use the SCT tune as a starting point. So now they're reverting my PCM back to stock and rebuilding from there.

Hoping this is getting close to the end of the saga on this. I've driven the car maybe 3 weeks since the start of the year, dropped it off at shop#2 for a 'quick' check of the tune on April 21'st, and now we're at the 4th of July. Missed all the best driving weather.

Sorry to be a downer here, it's just been a long road ever since the engine blew in 2022. Been one issue after another between the engine rebuild and tuning issues.


I had an issue a few years ago where my '13 wouldn't go OBD ready. Drove the OBD cycle countless times over 1,000+ miles, still wouldn't go ready with the rear O2 sensors and the cat. Ended up driving the car with the tuner in the passenger seat datalogging, he made some changes to the fuel trims, the car went OBD ready on the way home, about 30-45 minutes later.
It was the tune all along!
 

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