Go to any motorcycle forum, and you might see riders debating the golden question of performance modifications: Should I buy an off-the-shelf street tune, or take my bike to a local shop for a custom ...

Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run ...

Now entering its tenth month, Project T-top Coupe continues, but the top of November is also a point where we must pause, briefly, to celebrate a milestone. We are celebrating success in this report ...

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Love 'em or hate 'em, dynamometers have become an important part of our hobby and, even though they can be found at the scene of many a bench race gone awry or multi-page e-battle, they play an ...

Everyone and their dog knows the S58 twin-turbo I6 from the M division is underrated like crazy. BMW claims the G87-generation M2 produces 453 horsepower and 406 pound-feet (550 Nm), but dyno testing ...

A red BMW E92 M3 sits secured on a chassis dynamometer inside a professional tuning workshop before performance testing. The ...