LLY/LBZ/LMM 3” Downpipe Duramax 6.6 2004.5-2010 hooded sweatshirt By modifying signals with specific

By modifying signals with specific sensors under the hood

• Designed for 2017–2019 Chevrolet Silverado & GMC Sierra 2500HD/3500HD with 6

and smoother power delivery

- Envelope neck design for easy dressing

you will have full access to calibrate

LLY/LBZ/LMM 3” Downpipe Duramax 6.6 2004.5-2010 hooded sweatshirt By modifying signals with specificGet rid of that ugly restrictive downpipe and replace it with our 3" Stainless downpipe w heat wrap. Our downpipe provides a smooth and consistent 3" bore throughout the entire length of the pipe which equates to better CFM flow over the stock down pipe. Our downpipe has mandrel bent corners and welds only at the flanges not in the middle of the pipe like other brands. Flanges are machined and zinc coated, not cast. Note: A few washers may be needed