BD Diesel Split Exhaust System for 5.9L/6.7L Cummins

If you own a Dodge Ram Cummins here in Yuma, AZ, you know that eventually you'll develop an exhaust leak. But do you know why Cummins engines are notorious for exhaust leaks?

The Problem: Why Stock Cummins Manifolds Crack

Cummins makes a great engine. It's a straight 6 design and known for its torque output. Unlike its V8 counterparts, the straight size design uses a 1 piece exhaust manifold for all 6 cylinders. That extra length of the 2 cylinders makes for a longer exhaust that is subject to more expansion and retraction due to heat, especially in our Arizona summers. Name another component that takes heat like an exhaust manifold does on an engine. When the stock 1 piece exhaust expands and contracts over many heat cycles, the exhaust will literally pull off and away the cylinder head. It doesn't matter how you torque the exhaust bolts, heat will always win. When the exhaust comes off the cylinder heads, it develops an exhaust leak. That can cause a ton of issues with airflow and fueling and we’ve had trucks come into our shop - Power Forge Diesel in Yuma - with bad turbos because the system tries to compensate for this exhaust leak by adding more fuel and more soot and heat and literally destroying the turbo. So yes, this is a big deal.

The Solution: BD Diesel Split Design (Pulse Manifold)

The guys at BD Diesel have solved this issue while simultaneously optimizing the exhaust flow dynamics with their split design exhaust manifold for the 5.9L and 6.7L Cummins platform. The Split design allows the exhaust manifold to expand and contract with heat from the cylinder heads and because of the split, it flexes with those expansion and retraction heat cycles. This means that the manifold stays connected to the heads and does not cause an exhaust leak. They have also resigned how the exhaust gases flow through the manifold itself. This split exhaust allows the exhaust to pass through with less resistance which helps you boost quicker, minimize turbo wear, and keeps your ECM happy with fuel delivery.

Prevention vs. Repair: When Should You Upgrade?

When should you buy one? Many guys don't install these until a problem occurs. The problem with that thinking is assuming this doesn't happen when you're on a trip, can't afford it, or otherwise in a situation where you can't take care of it right away. When an exhaust leak occurs, it's only a matter of time before the exhaust leak causes other issues somewhere else on the engine. If you generally have good luck, then you're better than the rest of us and can fix it when an exhaust leak presents itself. For the rest of us humans, an ounce of prevention is worth a pound of cure. It is better to take care of this issue before it arises. Why put your expensive truck at risk when you can take care of the issue and experience the added benefits of a BD Diesel split design exhaust manifold?

Expert Installation at Power Forge Diesel

Power Forge Diesel in Yuma will make money by installing your exhaust manifold. However, we would rather make money installing a nice part on a truck without a problem than make our money replacing a turbo or any other components destroyed by a factory exhaust leak and then install the BD diesel split exhaust at the end of that. We love you guys, but trust us, we don’t want to see a beautiful Cummins pickup go down because of customer neglect by taking their chances on the factory exhaust manifold. Let us do it right the first time with a BD Diesel exhaust manifold install and not see you again for the same issue.