This is also actually a stock 6.2 catback on a 5.3 truck with the magnaflow 12909 muffler in place of the stock muffler and the flapper valve removed. The 6.2 catback is 3.5” all the way to the resonator at the rear of the exhaust. I have since cut the resonator off to give it a little bit more sound and now have the exhaust just dumped over the rear axle This is also with no catalytic converters, which keep the exhaust even quieter. My first catback was headers with the stock 5.3 catback and a magnaflow muffler. That setup, like this current setup, picked up power and mpg over the stock muffler
Honestly, thats what i want, quite, but flows good.
This is also actually a stock 6.2 catback on a 5.3 truck with the magnaflow 12909 muffler in place of
the stock muffler and the flapper valve removed. The 6.2 catback is 3.5” all the way to the resonator at the rear of the exhaust. I have since cut the resonator off to give it a little bit more sound and now have the exhaust just dumped over the rear axle
This is also with no catalytic converters, which keep the exhaust even quieter.
My first catback was headers with the stock 5.3 catback and a magnaflow muffler. That setup, like this current setup, picked up power and mpg over the stock muffler