brother just picked up an 03 super crew fx4 with the 5.4. what sounds good on these motors i was thinking about glasspacks out the rear with some black chrome tips if i can find them anyideas sound clips are appreciated. Ive got single chambers on my 03 gt not looking for quite that loud

 

Make sure you check out other posts on this subject. Your truck requires a certain amount of back presure and you can defeat this by making a wrong choice. I am not an expert on this subject but others on this site are. Good luck!

 

I went with the Magnaflow SI/DO catback on my 03 with the 5.4 and it sounds decent. Its quiet on the highway at cruise speeds and at idle, but she has a nice bark under acceleration.

 

The multi-cat setup on these trucks requires that you use a LOUD muffler to get much sound. Glasspacks are usually mild steel and I would suggest only getting a stainless steel muffler. A straight-through design gives nice power and sound. Magnaflow, Dynomax Ultra-flow SS, Borla, Edelbrock SS.

 

I have a gibson si/do on my 03 screw and it is very quiet for a cat back, probably the most quiet of all of the after \market systems. I like it because it is quiet and has a nice rumble while going down the road.

 

Heritage, which magnaflow system did you go with? The 15749 or a different one. Will the 15749 fit my 02 FX4 with a 5.4 without removing the spare or modifying the system?

 

Yes, it will fit w/ 17" spare.

 

SaaaaweeeeT!

 

I should have mentioned it was a Super Crew. Will it fit the Screw?

 

I just put on a super 40 Flowmaster SI/DO exhaust with stainless tips straight out the back on my 2003 Screw. It sounds awesome, not loud at all in the cab, but a great rumble sound outside. What a difference!!

Flowmaster muffler # 9430402

 

Bukshot, the #15749 fits Sueprcrews, Supercabs/short beds pefectly, and other configurations with some modifications, either cut it shorter for shorter trucks or add a piece of pipe for Supercab/long box configs.

 

Thanks a mill APT!

 

I just put the 15749 on my 01 screw, very easy and the best sounding exhaust..... Hands down.

 

hey all, just went to a place out here in san diego called Thunderbird Mufflers! these guys were real nice and helpful, and since i am in the military, i got a little discount! just paid for the labor! i already had a Flowmaster 40, a Flowmaster 'Y' pipe, and a magna flow stainless tip. all 3 inch. got it on in about an hour. they started it up and i dropped my pants! it sounded sooo awesome.!! first off let me say that i got all the advice on what size pipes and stuff like that from all you out there in cyber land, so my hats off to you! i highly recommend an after market Y pipe. the stock is basically a 2.5 inch pipe, going into a 1 inch hole! really poor design. i got it online from www.jegs.com at about 50 bucks i think, maybe less. the muffler was 20 bucks from a hot rod buddy of mine who wanted something a little quieter. so total for me was $270 give or take a few. but back to what i was saying. they installed the Y pipe, hooked up 3 inch pipes to the si/so 40, then ran 3 inch pipe over the 17 inch spare, and right behind the rear tire with a magnaflow stainless 3 inch tip. like i said, i sounds awesome. i have a 2003 5.4 screw 4x4. the noise on the freeway is nada! startup and at take off it roars. cruise....like i said, i had all the windows open and nothing, unless i was blowing the doors off a dodge, then you could hear it!! hope that helps just like i was helped, again thanks guys! willie!!

 

I knew you'd like that Y-Pipe mod.