Finally! L5P Duramax Tuning with Flashpaq

2017-2019 GM Diesel tuning for Silverado HD and Sierra HD is finally here with the all-new Flashpaq 2847-DS. Our calibrations team spent a lot of time perfecting our tunes to give you everything you’ve come to expect from a Superchips device. By adjusting torque outputs at lower pedal inputs, you’ll love the new throttle response. Adjustments to rail pressure and injection timing offer better power and torque throughout the RPM range, while helping to improve fuel economy as well.

On top of our performance tuning, Flashpaq also offers custom features like speedometer calibration for tire size and gear ratio changes, speed limiter adjustment, TPMS adjustment, Manual DPF Regens, Adaptive Transmission Learn, Engine Idle Up and the ability to read and clear codes.

This device includes our ‘ECM Send-In’ process, which will require you to remove your trucks factory ECM and ship it to us for unlocking. Once our specialists create the internal ECM modifications, it will be returned to you for re-installation into the truck, where you can then tune with your choice of calibration within the Flashpaq device. The purchase of the Flashpaq 2847-DS includes the cost of the ECM Unlock and Next Day Air return shipping of your ECM. Consumers should expect a 24-48hr turn around time, we do our absolute best to limit your trucks down time to as little as three days. Our ECM modifications are safe, reliable and compatible with GM dealer tools and flashes. So, your local dealer can still interact with your truck after you’ve returned your Flashpaq tuning to factory settings.

Link to begin your ECM Send In once you receive your Flashpaq
Send-In Form

All-new to this device is our ‘Keep Drive Modes’ feature which will remember your last driver settings for Exhaust Braking, Tow/Haul mode, and Grade Braking. This means you no longer have to manually turn those features on every time you restart your truck.

Flashpaq also offers end users the ability to adjust throttle pedal sensitivity within the device with our built-in Throttle Booster feature. Every owner has a preferred pedal feel and with Flashpaq for 2017-2019 GM Diesel, you have the control to set it exactly how you want it. Set throttle sensitivity anywhere from 0-50% above our calibration to optimize you driving experience.

Flashpaq offers up to an additional 150-horsepower and 350ft-lbs torque! After sending in your ECM to be unlocked, our pre-loaded tunes can be flashed into the truck to fine tune it for daily driving, towing, fuel mileage or all-out performance. Our tuning has gone through extensive testing and is proven to perform without undue stress on an otherwise stock truck.

Mileage XS 100hp/200tq
Heavy Tow 75hp/150tq
Tow Performance 125hp/250tq
Performance 150hp/350tq

As for the performance potential, they say the proof is in the pudding. These results are from our fleets 2017 crew cab short bed truck, with no modification outside our Flashpaq’s Performance tune. How’s that for proof? Also, see the dyno charts below.