Duramax
LML, L5P, LLY, LBZ and the rest of the Duramax family. Power you can actually tow with, tuning that holds up under load.
GM Diesel Performance Tuning
Custom diesel tunes for Duramax & Powerstroke.
Real tune files built for your truck, your driving, and your goals — delivered straight to your email. No dyno, no sitting in a shop.
Custom builtper truck & per driver
Email deliverytune file sent to you
Your deviceEFI Live · HP Tuners & more
Real worldbuilt for how you actually drive
What we tune
Built for the drivers who use their trucks
No generic cookie-cutter files. Every calibration is built for your specific setup and your specific goal — towing, daily driving, mileage, or all out.
Powerstroke
6.0, 6.4, 6.7 and beyond. Clean power delivery and calibration built around real-world driving and hauling, not just peak numbers.
Custom Calibrations
Tell me what you want the truck to do. I build a file around your combination of hardware and your goal — then send it to your email, ready to flash.
Have a different platform or a question? Email trwcalibrations@gmail.com — if it can be tuned, let's talk.
How it works
From your truck to your inbox in 4 steps
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1
Tell me about your truck
Year, model, engine, and current setup. What are you running, and what do you want it to do?
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2
Send your stock file
You read your current stock calibration with your tuner device and send the file over email.
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3
I build your custom tune
I calibrate the file for your exact setup and goal — and we go back and forth until it's dialed in.
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4
Flash it & go
Your finished tune is delivered to your email, ready to flash in minutes. Done.
Pricing
Simple, per-tune pricing
Custom work with real back-and-forth until it's right. No subscription, no surprises.
Custom Tune
Contact for price
One custom calibration built for your truck and delivered to your email.
- Built to your setup & goal
- Revision process to dial it in
- Emailed tune file — flash it yourself
Custom Tune + Revisions
Contact for price
The full treatment. Get your tune, drive it, and send back logs — we iterate until it's exactly what you wanted.
- Everything in a Custom Tune
- Data logging & iterative revisions
- Dialed in for real-world driving
Prices depend on platform, hardware, and scope. Tell me what you're running and I'll quote you exact.
About
Software engineer who understands diesel
TRW Calibrations is run by Hayden — a software engineer who tunes trucks for the way people actually use them. Not dyno-brag numbers that fall apart on the highway. Calibrations that tow, that daily, that hold up.
If it's a Duramax or Powerstroke and you have a tuner device, we can get you a custom file.
TRW Calibrations
GM Diesel Performance Tuning
- Email: trwcalibrations@gmail.com
- Delivered via: Email tune files
Start a tune
Tell me about your truck
Fill this out and I'll get back with next steps (or reply direct to trwcalibrations@gmail.com).