I have a 97 f150,5.4 supercharged with cams and long tube headers (no cats) with y pipe and a single magnaflow muffler, and its so loud at idle and accelerationand WOT, anybody know what muffler is quieter/less loud than a magnaflow? Thanks in advance

 

OEM

 

I got an OEM one for sale. $20 and you cover shipping. Surface rust no major damage. Can be easily cleaned and repainted. I can do it for an additional $20

 

Flowmaster Hushpower II (AKA HP-II).

 

Magnaflow makes mufflers in several lengths. The longer, the quieter. Let me guess, yours is a 14"?

 

MagnaFlow are great mufflers. Absolutely not on the loud scale. However like any performance part you need to be selecting the correct one for the application. Saying “I got a Magnaflow” means nothing. Not unlike saying “I got a truck”. Well, which one do you have?

 

We think that may be the root of the issue :p. That is a lot of noise and one muffler will not have the dampening ability to quiet it enough to achieve a streetable volume, regardless of the manufacturer. We would recommend throwing some catalytic converters back on the truck, even if they are the small high-flow ones. A quality made cat should have no problem being used on a forced induction application. Good luck!

 

I was wondering why your running a single exhaust with all that go fast stuff up front?
What size are you running, 3"?

 

Yeah im running 3in pipes, i had a 14in.. changed to a 18in muffler and it going a little bit quiet... but now i have a damm crack on my left exhaust header on the base of the egr tube 😂😂

 

Thanks for the help guys