LESS THAN 15,000 MILES OF USE. REGULAR WEAR AND TEAR, SOME SCUFFS THAT ARE ON HIDDEN, UNSEEN PARTS OF THE INTAKE WHEN INSTALLED AND WILL NOT BE NOTICED. 

*THIS INTAKE IS BY FAR THE BEST SOUNDING INTAKE ON THE MARKET* 

*SOUNDS LIKE YOU INSTALLED A REAL BLOW-OFF-VALVE ... PLUS THE NOTICEABLE HORSEPOWER AND TORQUE*