need a new muffler

[01expy]

I have a 4.6L 01 expedition and i was just thinking about replacing the muffler and getting a chrome tip. I want something loud but i need to pass emissions. Glasspacks or mufflers please help me out thankyou

 

[markanthony]

With past dealings with glasspacks on old hotrods. They sound sweet. Their is nothing like the sound and feel of one under the truck.. I found that they did nothing more the be loud. It took mine 6 months to a year to "break in" and sound better. Then after that they wore out. It seemed to me that with glasspacks. The low end was not their.

I would recommend going with like flowmaster 40 or 70 series muffler. They have the sound plus help the engine. Back pressure, They help fuel millage, and what nots. Depending on what type of sound you want would depend on what series you get. I have heard that the 40 series could have a drone sound to it. My buddy has flowmaster super 44 under his expy, with free flowing universal cats. It sounds great. He also gets great millage with it. The stock system he was getting 10 around town and 15 on freeway (he has sepctra CAI, accel coils and plugs. everything else is stock.) Now he gets 12 around town and 20 on freeway. He also has alot of off the line power.

 

[panda24619]

or get a 3" exhaust with a 16" bullet muffler. i dont know what mileage was before, but i get about 11. haha

 

[walnuts4x4]

I would recommend the flowmaster 40s.... love both of mine...lol

 

[joezek]

On mine I removed the two rear cats, and the giant single inlet/outlet muffler. I Then ran dual 2.5" pipes from the converters into a dual inlet/single 3" outlet muffler. I'm using a Spintech brand muffler, the same brand used by most circle track racers whenever they're forced to race in a town that requires mufflers. They claim to flow almost the same as a piece of straight pipe, and have an awesome sound. I'll have to figure out how to post a quick video of mine, I love em. The mpg went up, there's no "droan" on the highway, and it's real throaty. Idle is silent, but acceleration is loud.

 

[GAINMOB]

cat delete is somewhere on my list

 

[dcarr]

i have a 44 series flowmaster. sounds great when you get on it, mellow cruising. gave it a nice truck sound.

 

[Big Red Monster]

Im with Walnuts I love my 40 series mufflers. and yes they do have a drone to them at times but that was the reason I put those on my truck, I like that drone and I like being loud and letting everyone else in traffic know that Im coming through. they improved my fuel mileage in the city and the truck has alot of take off power now, love the low end torque.

 

[GAINMOB]

i dont know what series i have...has a drone...i'll have to get under and see if its stamp'd...i can add that to my sig...but i love the drone sound...i would go stainless tip instead of chrome...just me though

 

[masterhacker]

I was looking at one of these:
http://shop.advanceautoparts.com/we...omax_18290052-P_15_R|GRPEXHAAMS_683902989____

My dad's practically a manager and gets good deals for me

 

[Canadian Expy]

I have one Magnaflow muffler dual 2.5' in and outs with built in x pipe. Like the sound but might be to quite for some.

 

[BakerEdition]

muffler

On mine I removed the two rear cats, and the giant single inlet/outlet muffler. I Then ran dual 2.5" pipes from the converters into a dual inlet/single 3" outlet muffler. I'm using a Spintech brand muffler, the same brand used by most circle track racers whenever they're forced to race in a town that requires mufflers. They claim to flow almost the same as a piece of straight pipe, and have an awesome sound. I'll have to figure out how to post a quick video of mine, I love em. The mpg went up, there's no "droan" on the highway, and it's real throaty. Idle is silent, but acceleration is loud.

Joe, I would like to see some pictures...I never even thought of the way you did it...I want it to breathe but dont want it loud...I dont want to be the Hot rod preacher pullin and rattling the windows...LOL

 

[GAINMOB]

theres a tutorial done by solismo that explains how to do stuff...

 

[BakerEdition]

I have one Magnaflow muffler dual 2.5' in and outs with built in x pipe. Like the sound but might be to quite for some.

did it help any with performance or MPG..do you have a part number?

 

[Blueoval76]

I am running a stright pipe on mine and it sounds perfect to me. It is very mellow and growls pretty good when you get on it. I am very happy with the classic note it has. I plan to leave it that way and maybe just cut the rear y pipe and run the true dual out the back with no mufflers.

 

[Soldier777]

+1 on the straight pipe from cats back.. you want to know what it sounds like click my sig

 

[jacks3am]

rear cat(s) delete, SI/SO flowmater 70, and 3 inch tubing from muffler exit on, and a sexy 3-4 inch tip and call it a day