We hear it all the time, that cam profile, intake design or even head porting is for a naturally aspirated motor and doesn't work well on a turbo combination. Is this the reality or simply a crutch ...

The all-new 6.7-liter Cummins High-Output Turbo Diesel is rated at 430 horsepower and 1,075 lb.-ft. of torque. A redesigned block and head, robust heavy-duty pistons, new performance intake manifold, ...

With a little help from our friends at Tune Time Performance, we were able to find a willing TrailBlazer (owner Jim Skeenes) in which to test the new FAST (Fuel Air Spark Technology) truck intake ...

A turbocharger is the best power-adder by far. Not only do turbos harness otherwise wasted exhaust energy to drive the compressor, their modular nature lets compressor and turbine housings and wheels ...

Let's face it, the only people who don't love boost are people who haven't tried it. Okay, maybe the "everyone" part is a bit of an overstatement, but there is certainly no denying either the ...

If you think about it, there are things about your car that just don’t make sense. You’ve been told that more air is a good thing for power, that a cold air intake, more scoops, more vents, etc, are a ...