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gear

  1. Need Help Diagnosing Transmission Problems (MT-82)

    2019 mt-82 mustang gt. My friend's car. He got it a few months ago and recently we did a ported 18 mani, 350 tb, e85, and pmas intake along with a tune. Transmission decided the extra bump in power was too much... I don't know much about manuals so I hope I can explain this correctly. Clutch...
  2. Help Diagnosing Damaged Differential

    Need some help diagnosing my damaged differential. Wanted to see if any experts in here might know what is wrong since I know next to nothing about differentials. Car is a 2015 mustang gt, 6r80 with the 3.15 differential. ~125k miles on diff. Started noticing noise when going from drive to...
  3. Simpson Racing Products NOW AVAILABLE!

    Hey, All! Simpson Race Products are now available here at Lethal Performance! An industry-leader in racing safety products, Simpson produces helmets, driving suits, harnesses, and much more for all types of racing from Drag Racing, Circle Track, and Road Course applications. Check out...
  4. 2020-2022 Shelby GT500 differential gear fluid change - how to video!

    In this video, I show the workshop manual and walk through how to change the diff fluid on a 2015-2023 Ford Mustang S550 with a differential cooler.
  5. Limiter

    Anyone know if there’s a way to limit the car in drive to 85 miles but maybe if I switch it to sport it can change the limit to full speed? I don’t want to get anymore tickets lol. Figured it was a good idea but I don’t want it just 85 it would be nice if putting it in sport opened up the max...
  6. New gears... vibration??

    Hi everyone, first post here. I got new 3.73 FRPP gears installed on my 2017 3.7L. I also had to get a new diff so the new ring and pinion could be installed (stock diff for 3.15 do not fit 3.73s). However, now I get a vibration above 45ish mph. I went back to the shop and ran it on the lift...
  7. auto transmission kits

    Is there any kit on automatic transmission mistangs that enables me to upshift and down shift using the gear lever as well as the paddle shifters. Like the M3 for example.
  8. Noob question..lol

    So this is going to sound horrible, and I hope I'm asking this in the right spot. Correct me if I'm wrong, but the ecoboost is electronically speed limited to a top speed of 121. The ecoboost PP though, with the different gears gets up to 143 (i think?). Is this solely due to the gearing, and...





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