H-Pipe Vs X-Pipe: Which One Usually Delivers The Bigger Performance Gain?

X-pipes usually offer slightly greater potential performance gains, thanks to the venturi effect created by this type of dual ...
Motor Trend

X-pipes and H-pipes Add Easy Horsepower, but Which is Best for Your Ride?

Don't let the glorious Bow Tie horsepower fool you. Firing eight cylinders every 90 degrees in a 1-8-4-3-6-5-7-2 sequence is an inherently chaotic endeavor. Since the mass of the counterweights and ...
Motor Trend

H-pipe & X-pipe Exhaust Test

The difference between the off-road H-pipe (left) and X-pipe (right) is obvious. Although this X-pipe is a prototype, BBK/Brothers said they're going to make the weld line in the middle less apparent ...