Optimum exhaust flow is critical to maximizing the efficiency of any engine. After all, an engine is just a sophisticated air pump – and the easier it is to move air in and out, the more efficient the ...

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 ...

Considering purchasing a turbo kit for your car can become a daunting task, let alone installing and tuning afterward. It can be done right, with rewarding results, but if you are too ambitious or ...

"What do you mean the turbo is in the back?" This was a question posed by a hot rodder while hanging in the Fuddruckers parking lot. When we popped the hood and nothing but an STS Turbo decal and a ...