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VP44 injection pump
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Quadzilla diesel performance

Quadzilla Stealth 2 Tuner for LB7 & LLY 6.6L Chevy Duramax

Stealth 2 logo The Quadzilla Stealth Tuner is the ultimate handheld programmer for the Duramax. While being extremely well-known for being the most powerful handheld tuner ever produced, it also offers many other features that are important to you.
Quadzilla stealth 2 tuner
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on all Quadzilla Diesel Performance programmers/modules over $200 at ThoroughbredDiesel.com.
The Quadzilla Stealth Tuner was always the ultimate handheld programmer for the Chevy Duramax, but now Quadzilla has made it even better! Quadzilla now has combined all our tuners into 2 choices, to give you the most options ever available in a handheld tuner! We will now offer the Stealth tuner, Part# S2TUNER-S, with 6 tunes on it! This entry-level tuner will give you up to 135hp and up to 300 ft lbs of torque on all Duramax engines from 2001-2005. The Stealth Tuner "Race" version, Part# S2TUNER-R, will now have 10 tunes and will give you up to 215hp and 415 ft lbs of torque, to suit all your racing needs. The "Race" version will only be available for the 2001- (Early) 2004 LB7 Duramax. While extremely well-known for being the most powerful handheld tuner ever produced, the Quadzilla Stealth also offers many other features that are important to you that you can learn about below.
Precision Tuning
At the heart of the Stealth Tuner is many long hours of precision tuning combined with thousands of miles of real world testing. We combine the use of fuel injection pulse width and injection timing to create the ultimate horsepower and torque curves. The precision tuned timing maps are one of the reasons our tuner has the lowest exhaust temperatures on the market. Perhaps the best part of the Stealth Tuner is the mileage gain that you will see. We all know that a more efficient engine will gain fuel economy and we know exactly where the stock parameters are lacking. Depending on your driving style, you can expect to see a 1-4 mpg increase!

Power
The Quadzilla Stealth Tuner is packed full of power and features for your 2001-2005 Duramax. Among these features are power increases up to 215hp and 415ft lbs of torque on the 2001-2004 models and up to 135hp and 300 ft lbs of torque on the 2004.5-2005 models. Also included in this awesome tuner are the ability to modify your speedometer to compensate for larger tires, remove your top speed limiter, retrain your transmission, and read and erase engine and transmission fault codes. All tuners also have the ability to use these user-defined categories without installing an engine tune.

Performance:

Base Tuners 6 tunes up to 135hp*
Race Tuners for LB7 10 tunes up to 215hp*
Removes Top Speed Limiter
Raises Rev Limiter to 4400rpm
(*This gain is an estimation from the manufacturer. Gain will also vary at higher elevations.)

Features:

LB7 and LLY Tuners in a single unit with 1 price!!
Base Version tuner has 6 performance tunes for up to 135hp!
Race version tuner for LB7 has an amazing 10 performance tunes up to 215hp!
Read and Erase Diagnostic Codes
Correct Speedometer for different tire sizes
Removes Top Speed Limiter
Raises the rev limiter up to 4400rpms!!
Allows for Transmission Retraining
Fastest loading tuner on the market
Simple in cab installation
Increases fuel economy


Warranty:
Combine all of this with the best reliability, and you can't go wrong. We offer a 1 yr warranty in the tuner and a LIFETIME warranty on the software! No one else will match this. Quadzilla also offers free updates and revision to the original owner FOREVER.


Installation Time: 30 minutes
Level of Difficulty: Easy, complete installation and programming manual included
. Kit includes:
  • Quadzilla Stealth Tuner
  • All Necessary Installation Hardware
  • Thoroughbred Diesel now offers installation instructions for the Stealth 2 tuner.
  • Quadzilla low price guarantee at Thoroughbred Diesel
    If you find a Quadzilla product at a cheaper delivered price, call us and we will beat that price by $10.00!
when you will get your order
Product Description
Choose Your Truck
Price
Quantity
Order
Stealth Tuner - 6 Tune, 135 HP
Part #S2TUNER-S
free next day air
2001-2005 Duramax 6.6L LB7 & LLY
$404.10
Stealth Tuner - 10 Tune, "Race" Version - 215 HP
Part #S2TUNER-R
free next day air
2001-2005 Duramax 6.6L LB7 & LLY
$629.10
Stealth Tuner - 135h/300ft lbs of torque
Part #S2TUNER-LBZ
free next day air
2006-2007 LBZ & LLY DURAMAX
$404.10
Stealth Tuner - 20hp setting, 50hp,70hp, 90hp, 110hp. (note 90 and 110hp settings are extreme. will clog DPF and needs to have a chance to regenerate and burn off.)
Part #S2TUNER-LMM
free next day air
2007-2008 LMM DURAMAX
$404.10
Quadzilla Stealth 2 tuner and commander monitor
Quadzilla Stealth 2 tuner and commander monitor package deal also available.
Buy from a experienced diesel company, call us toll free at 866-737-4966, we give free advice.
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123 Westside Drive
Winchester, KY 40391
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