H-pipe
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Tourer
Joined: Feb 2014
Posts: 406
Likes: 5
From: NW Suburbs Chicago
H-pipe
An occasional rider buddy recently decided to disconnect the H-pipe on a Late model Heritage. Slip on exhaust and breather already installed. When I asked why, it was stated he wanted to go True Dual exhaust for better performance. I suggested that what was done will not increase HP or TQ {and possibly decrease performance}. He started to get a bit huffy about my lack of understanding of the Harley System of exhaust. Before I wade back into this discussion, I'm looking for some opinions. Am I wrong on this? Surely wouldn't be the first time!!
Road Master
Joined: Dec 2013
Posts: 1,238
Likes: 96
From: fort walton beach
the merge pipe helps in performance by increasing scavenging in the cylinders. exhaust moves in pulses. as exhaust passes threw one tail pipe it will create a vacuum threw the merge pipe in the other tail pipe assisting in removing exhaust and pulling in additional air and fuel
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,225
Likes: 11,348
From: San Diego, CA
For the reasons stated above, it is obviously your riding buddy who doesn't understand the Harley exhaust system.
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