well, i bought my 2002 ford f-250 "built tough edition" 2 weeks ago.. its a ALL black extended cab, bumpers and grill are black, tinted windows, V-10, automatic, 3.73 posi/limited slip. my first mod was a k&n filter, very little improvment, but what the heck.
then i put a straight pipe where the muffler now used to be. 3" straight pipe from the cat converter, into the stock 90 degree angled tip.
i didnt like it at all first, went straight to the local parts store to check up on a flowmaster, but decided to try it out longer.
long story short; from start up at idle, to about 2200-2400 RPM's it sounds AWESOME. after that it sounds like a indy-car. REALLY loud, high pitched, a few too many cylinders firing.
well i thought id let you all know what it sounds like, maybe a few of you could suggest what kind of muffler i should put in if i decide to.

 

Howdy. Welcome to the forum! Glad to have you here. Sounds like one beaut of a truck you got!

I slap on a Flowmaster series 40 tomorrow. I'll attempt to give an accurate description. Actually I'm gonna try and make a sound clip. All I'm replacing is the muffler. And I'll continue to use the stock tailpipe.

 

Ok..what do ya think?
I just bought a Flowmaster 40 Original Series...3 inch intake..
with 2 outputs(on the same side, 2 1/2 inch)...so I'm just replacing
the stock muffler..with 2 pipes exiting, with chrome tips...no Y pipe...so is it truly dual exhaust?? Will it sound good? More than once I thought that the truck had died...it's too quiet!!!...I see Monsta is putting on a 40..What kind of sound can I expect?
Thanks,
Lisa

 

well at least if you are doing DUAL exhaust, you are putting on flowmaster. every V-10 ford i have heard with duals and no muffler sound like crap, but the stright piped single outlet with the stock exhaust tip ( like i have )sound decent. still sound like an indy car though....

 

>Ok..what do ya think?
>I just bought a Flowmaster 40 Original Series...3 inch intake..

Sound good so far...

>with 2 outputs(on the same side, 2 1/2 inch)...so I'm just replacing
>the stock muffler..

$Smart move$

>with 2 pipes exiting, with chrome tips...no Y pipe...so is it truly dual exhaust??

Nope. Not in my book ;-)

>Will it sound good? More than once I thought that the truck had
>died...it's too quiet!!!...I see Monsta is putting on a
>40..What kind of sound can I expect?


Well Lisa, I have not made a sound clip and probably will not until I return from my annual vacation July 9th. I will say that you will not mistakingly think that your truck has died after you put that Flowmaster on. It finally sounds like a truck when at idle!

As far as the sound...I do not think that it changed the actual exhaust sound, only the volume. Does that make sense? I've always known what the truck sounded like I just couldn't hear it well enough. The Flowmaster (another thanks to Black Rhino) help with that. It is rich and powerful sounding. Indeed it will sound like it does now but amplified!! It is very nice!

I, too, like the look of the two side swept exhaust tips. Yours should look real nice.

 

Aww, c'mon monsta- get us a sound file!

Lisa- you do not have true dual exhaust. True duals indicates that each bank of cylinders has it's own pipe from the manifold all the way to the exhaust tip. Your truck has a Y-pipe BEFORE the catalytic converter, so you have cat-back duals. Don't try for true duals either- it would be a violation of Federal Law to "tamper" with the emissions system.

As for the "Indy car" sound, that is just a characteristic of the V10. Not sure how/if you can get rid of it and be street-legal.

 

Come on Monsta we need a sound clip and some pics.. Please with a pair of Abendx's pink panties on top...

 

Thanks guys...the work will get done over the 4th of July weekend.. I'll let you know what it sounds like..and I'm working on pics!!!


Lisa

 

Yes Monsta, you are correct "Don't try for true duals either- it would be a violation of Federal Law to "tamper" with the emissions system."

Unless there is an "accident" and the catastrophic converter becomes severely disfigured and HAS to be replaced with a new unit. And we all know how often THAT can happen with a 4WD !! I know how heartbreaking it can be to damage a fine unit like the factory cat, but, sometimes it's just unavoidable around here in Oregon/Washington to not hang up that cat on a big ole gnarly, sharp rock, too bad, so sad.

 

>Unless there is an "accident" and the catastrophic converter
>becomes severely disfigured and HAS to be replaced with a
>new unit.

Even then, it is my understanding that you you can't replace a single-cat system with a dual-cat setup. All you can legally do is replace the damaged cat with a high-flow version. Still, no TRUE duals.

 

[updated:LAST EDITED ON 29-Jun-02 AT 05:36 PM (EST)]maybe if you dualed it out with 2.5 pipes from the cats to 3 inch echotips it would make it deeper, my sounded high pitched when i got the muffler cut off but then i split into duals with those tips and it got much deeper, of course i only have a v8 but what the heck i would try it

 

Dodge dumped the viper side pipes because of the sound issue. For 03 they are back, the fix was a cross over pipe. In some states the EPA regs are more relaxed but it is not worth the fight.
I would try a high flow cat into dual pipes to dual mufflers. This was a setup run on corvettes and camaros for years.

 

Another note these are 90 deg V10's 90 deg is good for a V8 but is not optimal for V10 that is why the balance shafts. Also the crank timing is altered to try and fool the motor. This is another reason for the strange sound.

 

Older Ford V-6 SHO's had the sound issue you get in some 90
degree engines. People used very careful muffler selection
and appropriate resonators to shift the note much lower,
which gave the cars a menacing growl instead of an annoying
bumble bee sound.

Anyone played with other than flowmaster mufflers? With
resonator chambers?

After the dyno charts I have seem posted I'd like to play
with a more open exhaust but I have to be careful not to
make it too loud since we take very long trips in the truck.

-Jim
'01 E-450 Super Duty

-Jim

 

I went with the Walker Big Truck Xelerator, under a hundred dollars installed. Much improvement sound over stock IMO, it has a more "heat resistant" interior than the Magnaflow (1200 degrees? I did not want the cab resonance of the Flowmaster and was looking seriously at the Magnaflow, when the Xelerator option cropped up.) Low rumble-whoosh at idle, real throaty when you stab the throttle and sounds like a whooshing jet any other time, I like it.
Interesting sidenote, coming out of the Ozarks last week (St Louis), pulling an 1800# payload and 7200# Cargo trailer, facing a head wind all the way back to Oklahoma City, I had it out of overdrive doing 75-80 mph, 100 degree outside temps. The truck was really working it most of the 500 miles, pulled into the the house in the early evening to find my 5" Chrome exhaust tip, turned to solid gold!
I'd say the new Xelerator is broke in, mellow tone and not overpowering in the cab, thumbs up.