Why an L5P downpipe delete makes sense for your Duramax
If you're thinking about an l5p downpipe delete, you've likely realized the stock exhaust on your 2017-2023 Duramax is holding the truck back from its full potential. The L5P engine is a powerhouse right out of the gate, but GM had to make some compromises to meet strict regulations and keep the engine bay quiet. One of those compromises is the factory downpipe, which is famously restrictive. It's shaped less like a performance part and more like a crushed soda can in some spots just to fit into the tight space behind the turbo. ...