Although we have had tremendous success with the Stealth Tuner, we still found room for improvement. For 2005, we are going to combine our huge line of tuners into 2 choices. This gives you the most options ever available in a handheld tuner. We will now offer the Stealth tuner with 6 tunes on it! This entry-level tuner will give you up to 135hp on the 2001-2004 models and up to 110hp 225 ft lbs of torque on the 2004.5-2005 models. The new Stealth Tuner will also work on all Duramax engines from 2001-2005. We have combined two tuners into one! The Stealth Tuner "Race" version will now have 10 tunes up to 215hp to suit your needs. The "Race" version will only be available for the 2001-2004 Duramax and will also carry new pricing for 2005!

Try the Stealth Tuner and see why it is the Ultimate tuner for your Duramax.