Stealth Module - Chevy/GMC Duramax LML 6.6L (2011-2016)
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"Stealth Performance is badass. I towed my 5th wheel 41 almost 3000 miles and it towed flawlessly. Better gas mileage. Better pulling power. Better out of the hole feeling. Very happy with my purchase" - Michael G
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I have to say, I wish I bought it along time ago. I put it in right before I left for oak island and was getting 18.7mpg running 75 to 80 mph. Plus I have no turbo lag with a pep in the throttle pedal. When I ask about it on there website immediately some one from stealth answered me and was very helpful. Thanks
I run the Steath module in conjunction with a pedal Commander and the Mini Maxx V2. Couldn't be happier, a great product!
I have had it on my truck for 6 weeks now. I didn't think I would really help much but my mileage has gone up 4-5 mpg and lot better throttle response even while pulling my 12000 pound skidsteer.
I have had it on my truck for 6 weeks now and I can say it really works. Mileage went up 4-5 mpg and lot better throttle response. Very happy customer.
Definite boost in throttle response. Been running in the economy setting noticed an increase in fuel mileage overall. Not a huge increase but some gain never the less, Going to clean the O2 sensor to see if that has any additional affect. Pleased with the product.
Stealth Performance has not only improved throttle lag, but improved gas mileage by a lot. Very much impressed. Only have installed a week.
I have only tried the medium setting and it has improved the performance and mileage on my truck. I am going to try the high setting a little later.
Very satisfied with the Stealth module. Better throttle response and increase in fuel mileage. Trucks runs great.
This module is great and keeps getting better over time. I’m on the high setting on my LML and have gained extremely noticeable power increases and am up almost 4mpg at the same time!
It does exactly what they said it will do. The first trip pulling my trailer and pulling tractor weighing 21000 pounds accelerates great gets up to speed very nice easy install highly recommended
ill learning, only pulled a trailer 1 time so far but I was impressed with setting 3 for that, seem to be really smooth with shifting and power didn't see to much difference in fuel milage partly because i live in the mountains and rolling hills
Stealth has been noticeably better than stock! Love it! 2 mpg better at 70 mph with cruise on! Much better low end power and almost 0 turbo lag!
Superior Noticeable acceleration throttle response
Very happy with the product. I tow a 44ft 5th wheel and I definitely notice a difference with the stealth module , very pleased with all around performance.
What a difference! Drivability, throttle response, and mpg. I would not want to own a truck without a stealth module! 10/10 night and day difference!
So far the Stealth Module has been impressive. I’m currently midway on a 6000 mile cross country (and back) road trip towing my 34’ Fifth wheel toy hauler. So far I’ve been able to pull any grade at or above the posted speed limit! A nice secondary benefit has a solid two mpg pickup in fuel economy! Very happy customer.
so far it seems to work pretty good, i did get a slight increase in MPG and its seems to have a little more power from the start. but I want to see how long it will last for the money.
I have had the Stealth module installed for a few weeks. I have much better throttle response in the mid range and fuel mileage has increased ~2-3 MPG
It’s very easy to install just follow the instructions probably took me 20 or 25 minutes power is up fuel mileage 2.1 better I’m super satisfied with your product thank you Doug Fistler
4th truck I have installed the Stealth Module.. It woke the Duramax up!!! The truck and Allison transmission came alive with the extra torque for pulling my 43’ 5th wheel…. Great product..