Soundclip of 3" flm 331?

93project · May 2, 2011

Hey guys, I have my car running and it runs great. I have dumps for now because the car isnt 100% yet. I plan for tailpipes but the 275/40 18 rears don't allow 2.5 style so I wanna go with the flowmaster 15820 pipes, like 1990Coupe and 25Th have/had. Does anyone have a clip of how they sound? What about the drone? I have SEVERE drone in side right now which is compounded because I have no backseat and no carpet or anything back there yet. I'm building a rear delete kit myself modeled like the Kdezines style...
The car has a 331, hci, carb setup. 2.5 flowmaster 2 chambers so they're loud. I'm considering switching to magnaflow 11226 with the 3" flows back there
Thanks!

90stang5speed · May 2, 2011

I haven’t done this but, I read a post where another guy was complaining about a really bad drone around 2000RPM with 2.5 exhaust & flow masters. I don’t know if he was an engineer or what but, he got pretty deep into resonance frequency & hertz & other stuff. His solution was, take two 2.5 sections of pipe 18 – 20 inches long. Cap 1 end off on each pipe and then cut holes & T the pipes into your exhaust. The theory is that the sound will travel up those pipes bounce back & cancel out some of the sound being produced. He said it won’t affect the sound at WOT because the frequency of the exhaust pulses will be much faster. I’m not doing the technical side of this justice but, you could try to research the idea if it sounds interesting to you.

Rookie71 · May 3, 2011

I have a 427W with 1 7/8 LTs, 3" Prochamber, 3" Ultra Flows, with the 15820 tailpipes. I just put the tailpipes on along with some other changes. This video is of initial start up and setting timing. The car still needs a full tune, so it is idling a little fast in this clip.

Mustang :: Mustangidlevideowithtailpipes.mp4 video by pirlhart - Photobucket

Mintsick · May 3, 2011

^^ That sound's awesome.

90stang5speed · May 3, 2011

sounds good.

93project · May 3, 2011

does sound good, thanks...
I may swap to a magnaflow still. trying to keep it a bit quiet and flows just cant do that.

Rookie71 · May 4, 2011

93project said:
does sound good, thanks...
I may swap to a magnaflow still. trying to keep it a bit quiet and flows just cant do that.

I know that mine are on a stroked 351w, but the Ultra Flows are, relatively speaking, very quiet. I had dumped Ultra Flows before the tailpipes, and with tailpipes the noise from the valve train is as noticeable as the exhaust. That being said, I love the sound of Flowmasters and think it is the "mustang sound" but I live in a pretty tightly packed subdivision and I want to keep the noise down.

Good luck and post up what you end up doing.

85_SS_302_Coupe · May 4, 2011

I don't think you'll regret the Magnaflows...check my sig for a sound clip.

Oh man...i could imagine what my exhaust would sound like behind a 427 stroker....

93project · May 4, 2011

Ur link doesn't work

85_SS_302_Coupe · May 5, 2011

Photobucket is really starting to suck. They have this habit of moving their servers which changes the address to your linked media, which jacks up sig links.

Mustang Pics and Videos :: Magnaflow Exhaust clip video by EVIL85SSP - Photobucket
Mustang Pics and Videos :: 347 with Anderson Motorsports N91 cam video by EVIL85SSP - Photobucket

93project · May 5, 2011

85_SS_302_Coupe said:
Photobucket is really starting to suck. They have this habit of moving their servers which changes the address to your linked media, which jacks up sig links.

Mustang Pics and Videos :: Magnaflow Exhaust clip video by EVIL85SSP - Photobucket
Mustang Pics and Videos :: 347 with Anderson Motorsports N91 cam video by EVIL85SSP - Photobucket

Sounds awesome with those mufflers! Sounds so much smoother than the flowmasters... I'm getting my flow tube,magnaflow, dumps setup back tomorrow from the shop so I'll bolt it on and see if I can stayed dumped or if I need to run at least a over axle under gas tank setup. THANKS!

85_SS_302_Coupe · May 6, 2011

Here's the one that should have been in my sig. It sounds even better now with the stroker in place of the 302.

Mustang Pics and Videos :: July132008exhaustclipfun.mp4 video by EVIL85SSP - Photobucket

Soundclip of 3" flm 331?

93project

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it sucks (I know) to be on the receiving end

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it sucks (I know) to be on the receiving end

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it sucks (I know) to be on the receiving end

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Soundclip of 3" flm 331?

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