01-04 Duramax PPE Stainless Downpipe Intercooler Pipes & Y-Bridges Leave it in normal mode

Leave it in normal mode until you want control of the torque converter clutch (TCC)

allowing pure fuel to flow to the engine at a regulated positive pressure

These are things that are included in our complete SX-E turbo kit (SKU 122007)

collapsed hoses and fuel restrictions from occurring

01-04 Duramax PPE Stainless Downpipe Intercooler Pipes & Y-Bridges Leave it in normal modeSo many downpipe manufacturers to choose from! Whats the best one? Well the PPE has true stainless steel unlike some claiming stainless but they still rust. it also is fully tig welded for better weld joints, and it has true Titanium heat wrap for better durability and heat control. The PPE 117000400 3" Stainless Steel Downpipe for your 01 04 GM 6. 6L Duramax allows you to removed your crushed oval stock downpipe and replace it with a smooth round,