thank you

 

If i chop off the muffler will it used up more gas..........just wondering

 

Had Exhaust Pro add a 12586 Magnaflow muffler and a Stainless tip for $169.63.

 

heavy hitter--- i have what you need!!! i had it on my truck but i am goin with all new stuff headers back i put it on ....idk about 4 years ago and on mine couldnt really tell cuz the dual cat are retartedly quiet... it is a legal (looking) glass pack with a strait pipe thru it ...so really it is a legal strait pipe

 

I have a 2005 FX4 5.4L Threw out stock restricting exhaust from the "Y" Pipe. The "Y" pipe has a Catalytic convertor on each bank so NO muffler is required. Its LOUD when you first start it but after a minute the CAT baffles warm up and it quiets down nicely. I also put on a K&N air filter and intake system. Sounds good with dual pipes. The only drawback is a slight hesitation
on stepping on gas to pass (sorta like a bad accelerator pump on a 4Barrel of old) Other than that lots of air and no restrictions. Also when you stomp on it "R O A R !!!" Have fun deciding RIP