Engine sound change with FFP mount?

[Kalgorn]

So I installed the FFP mount this past Sunday and noticed the sound of my engine changed. It's deeper and has a more metallic sound to it now. Any ideas why? I can't imagine a motor mount doing this but the only other thing I've done is change the tranny fluid and that's obviously not it.

 

EDIT: I changed 'exhaust note' to 'engine sound' because I'm guessing it didn't really change the exhaust note, just the way the car sounds.

[Euro]

yeah IIRC when i had mine on before i sold em

 

they did make the engine sound like that...i thought it was cool

[94CutlassSLCoupe]

Its probably exciting a natural frequency of some piece of the engine (most likely the exhaust pipes) or something else in the engine bay

[19Cutlass94]

yeah I noticed mine kinda did that too. Its really nothing to worry about. Im guess that maybe since the engine moves less you can just hear the natural tone of it?

[manitcor]

yeah its normal, the stock mounts are desgind to absorb vibration more while the poly mounts are desgined to hold the engine better, as a result the vibrations are trasmitted into the car and surrounding components. You will prob notice you can "feel" the engine more too particularly if you have some mods.

[Stevo]

Weld the engine to the frame and weld some rods in place of the upper mounts... big horsepower.