Introducing high flow performance for your Duramax that is 50 state legal! The factory manifolds and up-pipes on the GM Duramax's have several design flaws that reduce potential exhaust flow. One of the larger draw backs is that the drivers side manifold has a large indentation in it for excessive clearance tolerances that is unnecessary. Secondly, the factory up-pipes are weak and prone to warping when sustained heat is prevalent.
Replacing your stock Manifold and Up-Pipes should be your first step in building a high performance exhaust system. These exhaust manifolds were co-designed by Honeywell (Garrett) and PPE using CAD software to maximize flow characteristics. The up-pipe bellows are high flow, internally sleeved and aircraft grade! PPE's High Flow Exhaust Manifolds and Up-Pipes lower Exhaust Gas Temperatures, reduce drive pressure, and accelerate turbo spool-up while maintaining reliability. Perfect for applications with upgraded turbo systems and nitrous equipped trucks.
California Air Resource Board D-701-1 Specifications
- ManufacturerPPE (Pacific Performance Eng.)
- MPN116111200 | 116111400 | 116111600 | 116111800
- Cast hi-sil moly iron high flow manifold construction
- Significant reduction in exhaust back pressure pressures
- Free flowing Stainless Steel Inner Liner Bellows
- Stainless Steel 11-gauge .120-inch wall diameter Up-Pipes
- Built in bosses, pre-drilled and tapped 1/8" NPT for EGT gauge sensor
- Substantial performance increase for upgraded turbo systems and/or nitrous injection
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PPE High Flow Exhaust Manifolds with Up-Pipes-50 State Legal 01-10 Duramax
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