ERZ Performance High Flow Cats

KEVTEX · 01-06-2010, 06:18 PM

A before and after comparison of sound levels from ERZ hfc's on a 370Z measured at 10 feet behind the car and 2 feet above ground level using a Radio Shack meter.
On the A weighted scale at idle: stock=54db, ERZ hfc's=57db
On the C weighted scale at idle: stock=72db, ERZ hfc's=77db
The next measurement was done by momentarily going to wide open throttle.
On the A weighted scale at WOT: stock=84db, ERZ hfc's=87db
On the C weighted scale at WOT: stock=93db, ERZ hfc's=94db
The bottom line is, that it is not much louder with just hfc's and everything else stock.

01-06-2010, 06:18 PM	#13 (permalink)
KEVTEX Base Member Join Date: Nov 2009 Location: Montgomery, TX Posts: 119 Drives: 2010 370Z 7at sp pg Rep Power: 16	A before and after comparison of sound levels from ERZ hfc's on a 370Z measured at 10 feet behind the car and 2 feet above ground level using a Radio Shack meter. On the A weighted scale at idle: stock=54db, ERZ hfc's=57db On the C weighted scale at idle: stock=72db, ERZ hfc's=77db The next measurement was done by momentarily going to wide open throttle. On the A weighted scale at WOT: stock=84db, ERZ hfc's=87db On the C weighted scale at WOT: stock=93db, ERZ hfc's=94db The bottom line is, that it is not much louder with just hfc's and everything else stock.