PDI Big Boss Exhaust Manifold for Mack & Volvo Engines

https://pdidiesel.com/

Key Benefits:

20% increase in airflow over stock
75-100 degree cooling of EGTs
Made in the USA
Warranty: 3 Year Unlimited Mile Warranty

We have designed our exhaust manifolds to maximize the exhaust air flow to reduce turbo lag time and cool exhaust temperatures. In the design of the manifold each port is analyzed and tested to provide a balanced flow to the turbocharger. Big Boss Exhaust Manifolds produce, on average, a 20% air flow increase over a stock manifold, cooling exhaust temperatures by 75-100 degrees.

PDI manifolds are a big part in maintaining the best exhaust pressure to boost pressure ratios which will provide potential for increased fuel economy. We use a superior grade of High Silicon with HSM that eliminates weak points such as warping, cracking, and center divider failure from heat erosion.

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