This puts a whole-new spin on twin-turbocharging.

Buick's intercooled 1986 Turbo Regal is the quickest and fastest production car built in America, and that includes the cream of domestic performance cars: Mustang GT, 350 I ROC Camaro, and yes, even ...

A supercharger—such as a turbo—compresses air. Compressing air heats it. Heating air makes it expand. This is a Catch 22 inherent in supercharging. So rather than thinking of quantities of air in ...

If you think about it, trickery plays a big role in performance tuning. We fool the ECU into giving us more power with black boxes. We trick the fuel system into delivering more fuel by upping the ...

I was told by the workshop that my car has an intercooler and it is busted. What does this mean? Intercoolers are fitted to cars with superchargers or turbochargers. On these types of engines, the ...

The young Turks are having their day at Volvo Car Corporation. Over the past ten years, a determined group of hard-core ...

Back in the last episode, we gained 50 rwhp by swapping to high-flow ported heads (Jose Motor Sports) and a hydraulic roller cam (Comp Cams). Our power gains were quite impressive considering there ...

Our government exempts imported vehicles older than 25 years from having to meet emissions, safety, and other regulations. A recent drive of a first-generation Volkswagen GTI got us thinking about ...