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The factory exhaust manifold(s) on your Cummins, Duramax, or Powerstroke are built to flow a very particular amount of spent exhaust gases out of the engine and into the turbine housing of your turbo. ... read more
The factory exhaust manifold(s) on your Cummins, Duramax, or Powerstroke are built to flow a very particular amount of spent exhaust gases out of the engine and into the turbine housing of your turbo. Once you've increased the performance of your engine and its producing additional boost, the manifold(s) becomes a bottleneck in the system. Especially if you've swapped out your factory turbo to a larger unit and you haven't upgraded the manifold, you're really missing out! ATS Diesel Performance builds a variety of their Pulse Flow Exhaust Manifolds for numerous applications ranging in direct fitment and some even featuring larger T-4 flanges or offset and centered designs. Some manifolds feature a multi-piece design that allows the manifold to expand and contract which alleviates any cracking as the factory manifolds are known for, especially on Cummins applications. Other models feature a unique thicker, ductile iron design that does not require a multi-piece design to prevent against cracking. When you're ready for an upgrade, check out the ATS Pulse Flow Exhaust Manifolds!
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