When should a street enthusiast consider replacing his stock damper?

If any engine work has been done which changes the any rotating or reciprocating mass then the stock damper will no longer be properly tuned. Installing a Fluidampr or Streetdampr will damp all destructive torsional engine vibrations providing maximum protection for vital engine components.

The most obvious sign of a problem with the stock damper is movement of the inertia ring, which can cause inaccurate timing settings. If this movement continues unchecked, there is a good possibility the ring could actually come off potentially causing engine compartment damage.