- Turbo lag
- fuel mileage
- throttle response
2018 GMC Denali 3500
A must have for the newer diesel trucks. Both my 19 power-stroke and my 18 Denali have them, and boy, what a difference. Throttle response is way better, and the power is all there. Highly recommended
2018 chevy 3500 duramax
Installation was easy an the product made a difference love how it pulls know.thank you STEALTH.
Got ride if dead petal
Got ride if dead petal and turbo lag and 1 to 2 miles better fuel mileage.
2018 Chevy 2500hd
I recently purchased the stealth module for my truck. It was very simple to install. I can definitely feel a difference in low end power. I was hoping for better fuel mileage.I keep it on the second level, and So far it remains about the same mpg as before. It got great mileage before at 19.6 mpg averaged over the last 11k miles. That’s empty and pulling a dump trailer.
2019 Chevrolet Duramax
Had the stealth module on my 2016 duramax and saw 4 to 5 mpg gains across the board and truck had 75K mikes on it! I recently purchased one for my 2019 duramax and so far I have not seen the improvement as with the previous truck. However it only has 6K miles on it.
2018 L5P All Terrain 2500 HD
I'm absolutely blown away by the results! Dead pedal is gone! My truck now has immediate acceleration just like a naturally-aspirated engine. My MPGs have risen over 2 miles per gallon. I could not be happier with this thing, I have no need to do a flash tune. I feel like 99% of people would feel the same way. I was actually able to spin my tires pulling my tool trailer on dry roads. For those of you who own an l5p, you know how much power you get in 3rd gear. This module gives you that power right from the get-go. I was looking for a way to increase initial power, without voiding my warranty, this is it. Believe the reviews people, they are all legit trust me.! 5 days after I installed the module, I installed a cold air intake. Coupled together, you will have no need to flash tune! The module by itself is phenomenal. Installing a cold air intake, just adds to it. Do not spend thousands of dollars on a tune, when all you have to do is try this. You will be happy. Thank you Stealth!
2019 Silverado 3500
This is my second module, I love them. The first was on a 2018 Ram 2500. I eventually deleted the truck and regretted it. It ran better on the stealth. So far I'm very happy with the one for the chevy. Need one for my 2500.
Hey Clay! Thanks for the great feedback, we really appreciate it. We'd love to see a picture of your truck to share on our site.
2017 GMC Sierra 3500 Denali
So glad that I got the Stealth module . Customer service is great and unit came right away. It is so easy to install and customer service seems to always be available. Love how they check to make sure everything is ok. Really made a great improvement on the dead pedal and really like the extra Horsepower and torque. I would highly recommend this to anybody that wants to wake up there truck without Sacrificing your warranty.
2017 GMC Denali 3500
So far the device is working great! I can feel the quicker throttle response, and the truck is a blast to drive.
Hey Frank, thanks for the wonderful review! We have just shared it on the Facebook page and website!
2018 Chevrolet duramax
Works great improved throttle response a lot and added 2 mpg
2018 GMC 3500 Dually
I'm happy with the Stealth Module. I notice better throttle response and better fuel mileage
For 2017 GMC Duramax...Easy install. Easy removal for service. Conservatively 3-4 mpg better (not currently towing). Way less turbo lag. Very satisfied!!!
Definitely helped turbo lag on my 2019 Chevy 3500
Great experience, simple install and easy to read instructions. Highly recommend this product,one buddy has already ordered his. Big notice in power and driving 75 to 80 mph down interstate with empty truck 16.2 average fuel mileage. Very satisfied customer. Thanks again
I have an 18 Duramax and have had several issues with the truck going into limp mode. Not sure if it is a module issue or if the truck has issues but the customer service is amazing. While having technical issues calling the 888 number the owner took his personal time at midnight to call me and assist me in trying to fix an issue that very well may have nothing to do with the module and is continuing to help me get my truck running like it should! Best customer service I have seen in a long time!
Great things come to Pass.
Took 30 minutes to install, just cant believe the additional power and the increase in fuel mileage, Pre-ordered back in November 2017, glad I waited for it. Their Customer service is the best, always got updates on the progress of the Module upto and including the day it shipped. I recommended it to my Nephew , he just bought a 2018 D-Max. last week
First time in cold and snow, ran like a beast!
Eric Madrid is a very good dude, helped me through some quirks, always polite! And he answers his phone or gets back with a text.
2018 Silverado 3500 CCLB, 4.5" BDS Lift, 295/65R20 Nitto Trail Grapplers
Love the turner!!! Bought after reading reviews and waiting for full delete to get through beta testing. Put on 6100 miles since I bought it and seen an average of 2.9 MPG increase! Running 78 mph I can avg 17.8 and around 14.7 mpg when running 85-90 mph. Would Highly recommend for anyone looking to wake up the L5P and get rid of the dead pedal.
Shocking sigh of relief (long, semi detailed review)
As you will hear from multiple reviews, we are all skeptical, took me 4 months to finally risk the money on this module. I immediately rushed out to install it when the ups man dropped it off. Since then, I have noticed that my MPG has risen, dead pedal is all but non-existent, and turbo lag has significantly diminished. Day to day driving is up about 34 mpg and Trailering has come up about 2-3mpg which shocked me the most. Also, love the length of the switch cable. Gives you options on where to mount other than just your common, under the steering wheel location. I mounted mine in the upper glove box, out of the way of accidental bumps from the legs. looking at levels(S,1,2,3) I have not tried the level 3 setting as I am not one to push my trucks limits until needed, I love it set on level 2 from day of install and reduce to level 1 when wife wants to drive haha. SUMMARY= Great Investment if you're not modding your truck but, just wanting cleaner response and drivability. I will definitely send my friends and family to order their stealth modules or I might give one away as a birthday gift. I will add a review after lifting my truck to see how it sits from there with more load