There will be a volume of air inside the horn that will now be compressed by the exhaust flow, this will cause a reverberant "beat" at different RPMS.
From behind the tips, the sound will be louder, and with a directional quality.
If the reverb gets to you, just learn what RPMs minimize it.
Why do you want these on your car anyway? Or are they for looks alone......
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1966 Customized for daily street and highway domination. 358 Windsor running 425 HP
C-4 Auto and 3.25 Posi
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