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  1. Decklid panel fitment

    I did this as well. Mine was out on the driver's side about the same amount as the OP's and it took exactly 1/2 turn to make it even with the passenger side. I The correct tool is a TORX E6 (which is the smallest I had and it worked fine) or possibly an E5.
  2. Trunk Lid Issues

    What did they do to fix the trunk alignment issue? Mine is the same way, left side bad, right side good. 2022 Mach 1.
  3. 4.09 Axle Ratio Computer Programming in 2021 or newer?

    I've done a little searching, but can't find a definitive answer about changing the axle ratio in a 2021 or newer car without an aftermarket tune. In my 2015 I was able to use forscan, but no longer have the program or OBD connector. My question is... Is there a way to program the BCM and/or...
  4. STOCK Mach 1 Fuel Economy (S550)

    In a Mach 1? Is that auto or manual?
  5. STOCK Mach 1 Fuel Economy (S550)

    If you put an imaginary supercharger on, and were able to drive on an imaginary road where you could drive with the pedal to the floor for an entire tank, I'd be willing to bet the cost of that tank of gas that you'd get at least 2 MPG. (Of course, I'd pay with real Monopoly money.
  6. STOCK Mach 1 Fuel Economy (S550)

    Good info. Yup, my computer seems to show about 1 MPG better than what the car is really doing. I'm driving about 25 miles each way, mostly going speeds of 50-60 with some slower traffic and couple miles of highway speeds up to 70. I am around 19.5 MPG so far.
  7. STOCK Mach 1 Fuel Economy (S550)

    I think we’ll figure that out soon enough.😉
  8. STOCK Mach 1 Fuel Economy (S550)

    I know, we didn't buy the Mach 1 for fuel economy. If you did you should have bought a Prius. I don't even care about gas mileage... Just curious for the sake of comparing different drivers' experiences. Please only "vote" if you have a Mach 1 (S550), without engine mods. Thanks!
  9. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    I honestly don’t think the engine is fully broken in yet. It still has that new engine smell after a few miles.
  10. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Very interesting. I guess we’ll see. Almost up to 4,000 miles. Wondering if it was traded in for that reason. Thanks.
  11. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    That's really interesting, but I'd be more inte Thank you for this reply.
  12. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Good info. So, what RPM is the engine at when you are cruising at 55-60 mph with the automatic?
  13. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    It does seem slightly worse in Sport mode than in Normal mode, and if I only give it a tiny bit of throttle (as in nearly none) it doesn't shudder. Also, as someone posted about their automatic shuddering except with cruise control on, mine does not do it with cruise control on. I would think...
  14. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Does your car have a stock tune? I bought this used and am not yet sure if it’s stock. I assume it is.
  15. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    I think you win the most unproductive input award. Move along. Grown ups are having a conversation.
  16. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Thanks for the info. So the fix is a Whipple?🙂
  17. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Hmm. Maybe you should go find out for sure, and get back to us when you have the answer. 👍
  18. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Thank you for the reply. This is exactly why I posted asking my question, and I appreciate that you took the time to experiment in order to answer it.
  19. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    Just to be clear, I don't drive the car like a little old lady, and it's not my first day driving a manual. I typically shift around 4,000 unless I have the chance to wind it out, such as getting on the highway, driving back roads with no other cars around, etc. Again, I have a 2015 Mustang...
  20. Does your Mach 1 Shudder in 6th gear, below 2000 RPM

    I tend to agree with this.





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