Cat-back exhaust systems don't generally make much difference in power/torque/efficiency on modern cars, as they are usually well optimized from the factory. And they can be obnoxiously loud both inside & outside the car. The Racing Beat exhaust for the 2014+ Mazda 3 is an exception on both counts. Normal driving around town, you can hardly hear the difference from stock - it's quiet and tame. When you apply WOT and run it up, it's a bit throatier from 3k on up, but it's not much louder, just a lower more pleasing tone quality. It's a subtle aftermarket exhaust system for adults.
On the performance side, Racing Beat publishes before/after comparison dyno runs that show marginal gains throughout the RPM range. Too small to feel any difference, but at least it's on the positive side. Since the gains come from increasing volumetric efficiency, it should have a corresponding minor boost to fuel economy.
Installation took 45 mins from start to finish including jacking up the car. Just 2 bolts (the OEM bolts weren't frozen even though my car has 46000 miles) and 4 rubber hanger mounts. It comes with new bolts, nuts, washers, and exhaust pipe gasket. It fits & hangs perfectly in position, no tweaking needed. Its fit & finish is better than OEM quality.
On the performance side, Racing Beat publishes before/after comparison dyno runs that show marginal gains throughout the RPM range. Too small to feel any difference, but at least it's on the positive side. Since the gains come from increasing volumetric efficiency, it should have a corresponding minor boost to fuel economy.
Installation took 45 mins from start to finish including jacking up the car. Just 2 bolts (the OEM bolts weren't frozen even though my car has 46000 miles) and 4 rubber hanger mounts. It comes with new bolts, nuts, washers, and exhaust pipe gasket. It fits & hangs perfectly in position, no tweaking needed. Its fit & finish is better than OEM quality.
