If you belong to the camp of people who still believe that back pressure helps your Harley-Davidson, or any engine, for that matter, we hate to break it to you, but you're wrong. Ask any engineer, ...
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Stop saying car exhausts need back pressure
Why Car Engines Don't Need Back Pressure + Exhaust Scavenging Do cars need back pressure? How should you size an exhaust? What exhaust diameter is too large, or too small? What is exhaust scavenging?
Add Yahoo as a preferred source to see more of our stories on Google. If you belong to the camp of people who still believe that back pressure helps your Harley-Davidson, or any engine, for that ...
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