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 ...

I learned this trick from the late Rod Sokolofski, who was the cylinder head specialist at Edelbrock many years ago. In pocket porting, the approach is to reduce the restrictive step present in ...

Speaking of high speeds, the turbo pushes the GTI's terminal velocity from 114 mph to 122. At that point, VW's rev limiter is ...