6.6L Duramax L5P (2017-2023) #61700

Hood work, then highway

I put it on my 2019 L5P in the driveway after work. Connectors clicked like factory. Next morning the throttle actually showed up when I merged. Still stock under the hood besides the module. Took me longer to find a 10mm than to finish the install. I put it on my 2019 L5P in the driveway after work. Connectors clicked like factory. Next morning the throttle actually showed up when I merged. Still stock under the hood besides the module. Took me longer to find a... I put it on my 2019 L5P in the driveway after work. Connectors clicked like factory. Next morning the throttle actually showed up when I merged. Still stock under the hood besides the module. Took me longer to find a 10mm than to finish the install. View more

Dead pedal is gone

Had the truck two years and hated that empty first inch of pedal. After a week with this, city driving feels normal again. Turbo still whooshes, just sooner. Wish the switch labels were a bit bigger with gloves on, but I leave it and drive. Had the truck two years and hated that empty first inch of pedal. After a week with this, city driving feels normal again. Turbo still whooshes, just sooner. Wish the switch labels were a bit bigger with gloves on, but... Had the truck two years and hated that empty first inch of pedal. After a week with this, city driving feels normal again. Turbo still whooshes, just sooner. Wish the switch labels were a bit bigger with gloves on, but I leave it and drive. View more

Tow days feel calmer

I haul a small trailer on weekends. Used to wait on the turbo, then it would dump in. Now the truck fills in earlier so I am not stabbing it. Mileage on mixed weeks looks better than last summer. Not magic, just less lag and less waiting. I haul a small trailer on weekends. Used to wait on the turbo, then it would dump in. Now the truck fills in earlier so I am not stabbing it. Mileage on mixed weeks looks better than last summer. Not... I haul a small trailer on weekends. Used to wait on the turbo, then it would dump in. Now the truck fills in earlier so I am not stabbing it. Mileage on mixed weeks looks better than last summer. Not magic, just less lag and less waiting. View more

Left the ECM alone

I wanted more response without flashing anything. Installed it under the hood, drove it to work, and the truck still feels like my Duramax. Just sharper when I ask. That was the whole point for me. I wanted more response without flashing anything. Installed it under the hood, drove it to work, and the truck still feels like my Duramax. Just sharper when I ask. That was the whole point for me. I wanted more response without flashing anything. Installed it under the hood, drove it to work, and the truck still feels like my Duramax. Just sharper when I ask. That was the whole point for me. View more

Daily commute, less lag

On-ramp is where I notice it. Pedal used to sit there, then the turbo would catch. Now it comes on when I need it. Simple install, no extra gauges, and I have not touched intake or exhaust. Four months in and I still look forward to the drive home. On-ramp is where I notice it. Pedal used to sit there, then the turbo would catch. Now it comes on when I need it. Simple install, no extra gauges, and I have not touched intake or exhaust. Four months in... On-ramp is where I notice it. Pedal used to sit there, then the turbo would catch. Now it comes on when I need it. Simple install, no extra gauges, and I have not touched intake or exhaust. Four months in and I still look forward to the drive home. View more