Chris98TJ

Hey guys I have a 5.4 07 screw I just want to replace the muffler with a borla or something. What would be the best option to do that. I don't want a kit I just want to take the old one out and put a new one in.

Mod (Ret.)

There was a thread posted just last week on this same topic. check it out:

https://www.f150forum.com/f4/exaust-opinions-287272/

Chris98TJ

I saw that post and that's not what I'm looking for. I want to replace my muffler and use the same tailpipe, just replace the actual muffler itself nothing else. I was wondering what size pipe is going in and going out. Single in single out.

04 Lucho

Ever thought of just straight pipe it?

live2hunt-hunt2live

I deleted the rear cats on mine and put a flowmaster 70 series in place of my stock muffler and I love it! It has a nice rumble at start up and cruising around at slow speeds but on the highway at 70 mph there is basically no drone!
It all depends how loud u want your truck, flowmaster has vid clips on there website of how each series of there mufflers sound

LEN671

Do you have pictures of how you did it?

Chris98TJ

No I want a nice rumble with no drone I'm not into loud pipes at all

wirenut2002

i run a flowmaster series 44 on stock tail pipe with a metal mulish 5 inch tip nice rumble when you on the gas and quiets down at normal traveling speed the depth of sound can be achieved by the tip you choose as well. I ran it for a bit before i got the tip on and it was noticeable i just wanted a lil more rumble so i added the tip and love the throaty sound. almost all aftermarket mufflers that have some throaty sound to them will have some drone

wirenut2002

when you do find one check out advance auto see if they have what you are looking for online they will ship it to your door

type in promo code trt30 and save yourself 30% on site wide

Chris98TJ

What size inlet and outlet is the muffler?