Engine Calibration's by PistonTwistin LLC

Getting Started:

1. Place Your Order: Select your tuning package that best fits your needs. Make sure all details are correct to avoid delays.

2. Receive Order Confirmation: After placing your order, you’ll get an email with a link to an order form. Read this email carefully as it contains important information.

3. Fill Out the Order Form: Click the link in the email to fill out the order form. This gives us the details we need to create your custom tunes.

4. Order Processing: Once we have your form, our technicians will start working on your tune. You’ll get your custom tune within 1-3 business days, depending on the complexity of your order.

*NOTE : customizations or highly modified trucks require datalogging*

5. Receive Your Tune: Your custom tune will be sent via email with installation instructions. Or if you need purchased your own device it will be delivered to your doorstep.

6. Support and Inquiries: For any help, contact us at PistonTwistin@gmail.com

We’re here to assist you :)

For more info about expectations after you place an order, please read this article I just placed my order. What should I expect? – Piston Twistin

Why Choose PistonTwistin ? 

- Unlock Performance: Our tunes go beyond just increasing numbers. Enjoy a dynamic driving experience with faster throttle response, better acceleration, and reduced turbo lag. Pretty much just like steroids, but for your truck!

- Efficiency with Attitude: Our Engine Calibrations boost power while intelligently managing fuel consumption. Get more out of every gallon without sacrificing performance.

- Tow Like a Titan: Our tunes turn your truck into a towing powerhouse, making heavy hauling effortless. Or if you’re into pulling competitions, we can fine-tune your truck for peak performance.

      -Perfect Pairing: Combine our Engine Calibration with our Transmission Calibration for seamless gear shifts and superior performance.

        -Customization Options: Choose from various power levels to suit your needs. Our DSP5 option even allows switching power levels on the fly.

* Note: customizations require datalogging. *

For more information about why you should tune your truck please read this article : Why Should I Tune My Truck? – Piston Twistin

Installation Options:

1. Pre-loaded AutoCal V3 Device: Purchase an AutoCal device with your tunes pre-loaded. Simply plug it in and go! *REQUIRED FOR HIGHLY MODIFIED TRUCKS* 

2. Bench Flashing Service: Send us your ECM or TCM. We’ll flash them on the bench & ship them back to you ASAP. *REQUIRED FOR LOCKED / BRICKED ECM's.*

3. Email Delivery: If you have an AutoCal or FlashScan, we’ll email your custom tune file. Make sure your device is unlinked from any previous tuner and has a VIN slot available.

For more information about installation instructions please read this article :

 How To Flash The Tunes To My Truck? – Piston Twistin

Bench Flashing / Unlocking Service Expectations:

1. Place Your Order: Find your truck year & select “bench flash or unlocking services”.

2. Receive Order Form: Check your email for the order form link.

3. Package and Ship: Carefully package your ECM/TCM with bubble wrap to prevent damage. The shipping address will be in your confirmation email.

4. Processing Time:
- Bench Flashing: We’ll process and ship back your ECM/TCM within 1-2 business days.
- Unlocking Services: This can take up to 5 business days.

For more information about bench flashing please read this article :

BENCH FLASHING ? – Piston Twistin

Comprehensive Remote Support and Updates:

All our sales include remote support and unlimited free updates. Plus, if you decide to upgrade to non-VGT, twins/compound setups, or larger injectors (30% increase), we’ve got you covered , will just require datalogging.

• Stock Transmissions: We offer varied power levels, but we recommend not exceeding an additional 120HP to avoid premature transmission failure.

*STOCK TRANS POWER LEVELS*

• Level 1: +20 RWHP STOCK OPTIMIZED
• Level 2: +40 RWHP HEAVY TOW
• Level 3: +60 RWHP LIGHT TOW
• Level 4: +100 RWHP STREET 
• Level 5: +120 RWHP SPORT 
• DSP5 : ( 5 MAP SWITCHABLE TUNING , ALL 5 MAPS ABOVE ) 
• OTHER ( PLACE IN NOTES ) *CUSTOMIZATIONS REQUIRE DATALOGGING*

**Important Note**: The LLY ECM can experience issues while attempting to flash. Some might need specific fuses pulled. We recommend bench flashing for the best results. Please disconnect any aftermarket radio’s , alarm systems , or remote starters as these can interfere with the flash process.

Duramax Fuse Removal :