Hey im new here and I have an 01 Screw 4x4 and was wondering if anyone has cut the muffler off their screw and also if the sound was nice and the gas milage changed very much?

thanks for the help!

 

Did this on my '99 Ext. Cab F150, it made a bit of a growl, sounded kind of racy, hard to explain sorry - didn't seem to impact gas mileage a ton.

That being said, I cut off my muffler and added a turn down just behind the cab. This was fun for a week or so until I realized it was so loud in the cab (specifically around 1,700-2,500RPM) that you couldn't talk on the phone or to another person without raising your voice. I eventually had a local shop run dual pipes (from each cat) to an x pipe, then out to the bumper - this made a much better tone and it was actually bearable in the cab, although it was loud enough to set off car alarms if you got on it in a parking lot. It would always draw attention (good and bad!) and was a big of a nuisance at drive thrus - they couldn't ever hear what I wanted to order!

It was fun to have for awhile, but I have a Flowmaster on my '05 with SI/DO, and wouldn't want to go without a muffler again, just my opinion based on experience. I'd go with a semi-loud muffler with an aggressive tone if I had to re-do it again - I have no idea which muffler would do this but there are some other members I'm sure have the answer.

Hope this helps!

 

i did this on my 2001 screw 4.6l and it lost all of its low end completly, i wouldnt recomend it, i know it sounds cool but id throw a muffler on it. you need to have some back pressure and the cats just aint enough to give you that low end stock torque.