Most stock OEM air cleaner and filters will flow more air then a
Harley engine can use, be it a stock or modified exhaust system.
If you modify both intake & exhaust, a retune may be required.
Bob has made some rather amusing posts lately, most notably a comment regarding a better sounding exhaust due to lower compression.
Look up the compression ratio for some of the early model mustangs. It was about 8 to 1. Higher compression rations make louder bangs and cracking sounds. (Higher frequencies)
Look up the compression ratio for some of the early model mustangs. It was about 8 to 1. Higher compression rations make louder bangs and cracking sounds. (Higher frequencies)
And it all changes depending upon what you were drinking or smoking at the time.
And it all changes depending upon what you were drinking or smoking at the time.
Let me put it this way... I have found that I like the sound of low compression engines better than high compression engines. Sound is a very subjective experience.
Let me put it this way... I have found that I like the sound of low compression engines better than high compression engines. Sound is a very subjective experience.
Outside temperatures and humidity will play with the sounds too. What % humidity and temps are most desirable to reach an acceptable tone, lets say, for a stock 1965 426 street HEMI.