- Turbo lag
- fuel mileage
- throttle response
- fuel economy
2020 GMC Sierra 2500 AT4 HD
Having had diesels in the past I knew of the dreaded turbo lag. I knew I wanted something to eliminate that on my new tow rig. I wanted something to give the 6.7 Duramax a little more pep as it has plenty of power already. Did a little research and settled on the Stealth Module. The module was very intuitive and easy to install. After the install I had to take it for a quick test drive. Set the dial to everyday mode and instantly noticed better throttle response and almost no turbo lag. Two days later I set the dial to heavy tow and hooked up to my 10k camper and headed for the North Georgia mountains. I caught myself constantly having to monitor my speed and ease off the throttle. The power and torque was plentiful. I just waived at all the other trucks with their sleepy engines as we blew by them going up the mountains. I felt as though the truck had endless power and speed, never felt like I needed more. Over all the module has performed as advertised and perceived value is well worth the cost. Great job Stealth Performance Products.
2019 Chevy Silverado 3500 DRW
Awesome, just awesome. Immediate throttle response better fuel economy! Should’ve bought this module sooner!
GMC 2500 desiel 2019
It has increased my mileage by 3 miles to the gallon and the power is good
2020 silverado 3500 hd
Been using it everyday pulling mini ex and skid steers around and love it so far. The power difference is very noticable and unloaded fuel mileage is 2-3 mpg better but not without a trailer of some kind very often! Does exactly what was advertised.....very happy!!