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November 2023 by Jasmine F.
A stealth performance module caused my engine to seize up and even worse it voided the manufacturers warranty. I would leave negative stars if I could.
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August 2023 by Ashley H.
Had one of these bad boys put on a2019 dodge cummins and it gave thetruck the get up and go IT SHOULDHAVE HAD IN THE FIRST PLACE.Turned this truck from low and slowinto the peppy powerhouse I wanted. Allthat without messing with anyemissions, no permanent tuning, nocrazy expensive upgrades just this plugand play unit. Highly recommend! Eric istop notch to work with and thecustomer service is just amazing.I cannot say enough good things aboutthis product and company!
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February 2023 by Kendal Asher
Installed one on my 2018 Cummins (took 15 minutes just like they said) and could notice a difference in power almost immediately. No more dead pedal as they say. I haul a trailer daily and never have any issues with the truck struggling for power now. They never promised any increase in mileage but in town with a trailer I get 15 mpg and without I get 19-21 mpg and on the highway I’ve gotten up to 32 mpg and that’s with 33x12.5s on 2 inch spacers. Any diesel I own in the future will have one put on immediately. Greatest company I have ever dealt with and will recommend them to anyone who owns a diesel. They’ve unlocked the code for waking your truck up so don’t wait and order one now!
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February 2023 by Paul Bissonnette
Always a great experience! If I ever have any questions the tech team is always willing and able to help. Ive had several modules and over the years I've saved a lot on fuel with using the Stealth module,
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January 2023 by Josey Wales
I purchased a Stealth Module for my 2022 Ram 3500 HO Cummins. The install was super simple and so far the results are great. Truck runs better and can feel the punch.
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January 2022 by John
Excellent place! Friendly people A++
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January 2020 by Tony Hooton
This is a very good quality product and has never caused my engine any issues on the 2017 f-450. The performance is there as promised and we look forward to seeing the new products that Stealth has coming to the market. Thank you to the team at Stealth, great work.
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January 2020 by Zack Newman
This company has come along ways. They continue to grow and make there product that much better. I continue to support them.
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January 2020 by W. J. Barry Horse Trans. INC.
I’ve had the Stealth installed on my 2016 Ram 3500 Limited for about a month now and it’s a totally different truck. I pull a 40ft trailer daily with it , and I have it set on the middle setting. No more dead pedal feeling better fuel economy and much more responsive all around. I’m glad I decided to get the Stealth. The truck should have come from the factory this way. Great job Stealth!!
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January 2020 by Corwin Lagueux
Going into this purchase, I was pretty skeptical of the claims. The shear volume of positive reviews convinced me to take a chance and order one. I am very happy I did. My ‘17 F350 was averaging 13.6mpg and suffered from debilitating lag - especially in the low gears. Installation took no more than 5 minutes. It seriously took me longer to decide where to mount the module under the hood than it did to make the connections. My daily commute is 52 miles each way with 90% light traffic interstate highway and 10% moderate traffic surface streets. In the past three days, I have seen my average mpg increase from 13.6 to 14.9, and I have noticed a moderate decrease in turbo lag and the “dead pedal” feel. For the very reasonable cost and guarantee that the engine warranty won’t be voided, this module is absolutely worth it. I would recommend it to anyone who wants modest performance and economy gains on their diesel without invasive modifications.
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January 2019 by Scott Sommer
Since installing this module in my 2018 Duramax 6.6 L5P I have seen my MPG go from 17 to over 20 @ 75 MPH. It really cleaned up my throttle pedal feel! Great product for sure. Customer service is stellar!!
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January 2019 by Jason Gosnell
Install this module on my 2018 Ram Laramie about two weeks ago and all I can say is WOW!! The gains are impressive. I haven't seen a mileage increase, but I have it on the high setting and I can't keep my foot out of it??. Good job you guys I am impressed.
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January 2019 by Tim Payne
Great Customer service Thanks Eric
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January 2019 by Danen Petersen
The guys at stealth were great to work with. My 2014 ram Cummins has more power and better fuel economy (about 2 mpg with mixed driving) with the stealth module.
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January 2019 by Mike Pritchard
Stealth modules did exactly what they said it would and even more. No more searching for gears while towing and the added mpg is just a bonus. The customer service is better then any company I've had to deal with. Absolutely recommend Stealth Modules!!