Flowmaster or not
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Freshman User
Joined: Oct 2004
Posts: 34
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Flowmaster or not
i have a 99 xsport and am thinkin about puttin a flowmaster on it. but i cant decide if i want the 40 or 50 series. i want it loud but not annoying on the inside. if yall ave any input on which ine to choose or another brand of muffler in general i would apperciate it
thanks
thanks
Posting Guru
Joined: Dec 2003
Posts: 2,155
Likes: 3
From: Centerville, Iowa
My suggestion is to find a shop that will let you "try out" the muffler. 100 dollars a pop for mufflers isn't exactly fun. If not...you're taking a big chance on it. Find some people with dual's and ask them about their setup. I personally LOVE glasspacks....and the only Flowmaster's I've heard were Delta's and I didn't take kindly to the sound. Anyways....its all to your ears. The 40's are gonne give off resonance no matter what. My friends 302 mustang with dual FM40D's resonates like CRAZY. The 50's are supposed to cure that...but at what cost to sound?
Postmaster
Joined: Jul 2004
Posts: 3,624
Likes: 1
From: Bixby, OK
40 series with Delta-flow is supposed to reduce interior resonance, and i've found in my 2.9 Bronco II, it has less interior resonance than my stock exhaust back whenever I had it.. except at full throttle or even 70% open then it's not resonance, just that performance growl. The 40's are supposed to be for offroad and race, they're semi-street legal.. depends on the area you're in. The 50's also have delta-flow technology, and they're not supposed to be as throaty sounding, so they do take a little more or then interior resonance down, but whenever you step on it, they're not as loud. If you want it really quiet go with the 70 series. If you are wanting loud I would go with dynomax bullets.
New User
Joined: Jul 2001
Posts: 22
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40 series no good
I removed a pair of 40 series because the resonance was nausiating. 
Could not stand it.
Put on 50 series Deltas and much better but am not really happy with the sound. Am living with them now but considering a change.
Could not stand it. Put on 50 series Deltas and much better but am not really happy with the sound. Am living with them now but considering a change.
Elder User
Joined: Mar 2004
Posts: 716
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From: HollyWood Ca
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Laughing Gas
Joined: Sep 2003
Posts: 890
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From: small town, north dakota
I think the FM 40's are pretty nice sounding. If you run them straight out the back, it won't be quite as loud in the cab as if you dump them underneith, obviously. My buddy ran duals with 40's on his 94 f-150 (302)...I think it sounds pretty cool. It's fairly loud, and has some crackle when you get on it. Nothing compared to glasspacks tho. I put a si/do 40 on my 95. I'd be willing to try out some other muffler if I ever redid mine. It's all a matter of what sound you're looking for. Hope some of this jibberish helps.
Oh, if you do decide to go with FM's...look at "performancepeddler" on ebay, has them for like half the price of most.
Oh, if you do decide to go with FM's...look at "performancepeddler" on ebay, has them for like half the price of most.
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Laughing Gas
Joined: Aug 2004
Posts: 1,138
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From: Yuba City, Ca
Originally Posted by hsfbfan
50 series would be quieter still, but I don't like the sound.
