Today you'd be hard-pressed to find a diesel engine that doesn't benefit from a charged air cooler (intercooler), as they're part of every manufacturer's powertrain package. But back before ...

As much as we like the 5.9L Cummins powerplant, the stock exhaust manifold is constrictive and contorted, interfering with the flow of gases to the turbo and downpipe. That, in turn, can produce the ...