Certified Tuning

 JR’s Performance Tuning started after I paid a “professional tuner” to tune my own truck. I was never happy with how it drove—and once I learned to tune, I discovered the tune I paid for could have damaged the engine.

Now I focus on driveability, reliability, and how the vehicle feels, not just peak dyno numbers. My transmission tunes are specifically designed to help your transmission last longer by reducing torque converter slip and preventing early torque converter failure.

 What services does JR’s Performance Tuning offer?
JR’s Performance Tuning offers safe, affordable tuning for GM LS/LT-based platforms with 4L60 / 6L80 / 8L90 / 10L90 transmissions. I focus heavily on transmission behavior and driveability. 

What is needed for remote tuning?
If you’re not local to San Antonio, you’ll need HP Tuners to install the tune on your vehicle.

How It Works (3 steps)

1. Send your vehicle info (year, model, mods, HP Tuners details)
2. I build a safe, driveable tune focused on longevity
3. You flash it and send logs if needed for fine-tuning