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Just installed Flowmaster 40-Single In, Dual Out...

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Old 01-20-2005, 11:24 AM   #1
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Just installed Flowmaster 40-Single In, Dual Out...

It's not as loud as a lot of people on this board says it is, but it still sounds awesome!
Old 01-20-2005, 12:46 PM   #2
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Re: Just installed Flowmaster 40-Single In, Dual Out...

It will get better with time. The muffler will get broken in and open up and get lower/deeper and have more of a growl to it. :thumbup:
Old 01-20-2005, 06:38 PM   #3
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Re: Just installed Flowmaster 40-Single In, Dual Out...

There is nothing to break in. Carbon buildup on the inside may change the tone slightly if at all. I myself ran a 40 series for almost a year and hated it from day one. In my opinion they are not all that they are cracked up to be. Last year I decided to be different and tried the Ravin Z55 series muffler and I love it. Great sound and performance. I have had many compliments with the Ravin, but never with the flowmaster. I may change again in the future, who knows. The one thing I do know is that I will never run another Flowmaster! I am not looking for an arguement nor am I trying to step on the toes of all the Flowmaster followers outthere. We all know what we like and for me it's the Ravin.
Old 01-21-2005, 12:23 AM   #4
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Re: Just installed Flowmaster 40-Single In, Dual Out...

i like my flowmaster, but to each his own.

BTW, this is what my single in dual out sounds like

http://img.s10forum.com/album1837/aac.mpg
Old 01-21-2005, 12:37 AM   #5
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Re: Just installed Flowmaster 40-Single In, Dual Out...

I love the way it sounds, but just thought it would be louder. Maybe it just needs to mellow out.

Also, do you think a new cat would be a good idea? I have a '96. If so, what kind of cat? I'm also looking at getting new headers.
Old 01-21-2005, 05:31 AM   #6
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Yep, thats a Flowmaster alright. Tin can sound, not deep enough and way to much interior resonance. That is why I hated mine and made the switch. Like you said, "To each his own". Again, I am not flaming anyone who likes a flowmaster. It just isn't my cup of tea.
Old 01-21-2005, 10:36 AM   #7
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Hey everyone has their own opinion. I love the tinny sound that flowmaster makes. But mine is loud as all hell. One you get headers and replace the y-pipe for a bigger one and put a high flow cat on there it will get nice and loud.
Old 01-21-2005, 02:07 PM   #8
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
Yep, thats a Flowmaster alright. Tin can sound, not deep enough and way to much interior resonance. That is why I hated mine and made the switch. Like you said, "To each his own". Again, I am not flaming anyone who likes a flowmaster. It just isn't my cup of tea.

you have a soundclip of the ravin z55 on a 4.3L v6? I'd like to hear it
Old 01-21-2005, 04:32 PM   #9
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Re: Just installed Flowmaster 40-Single In, Dual Out...

My Flowmaster 40 may not have "broken in" but it has definately changed (gotten louder) in the 10 months I've had it. I love my Flowmaster and I've gotten many more compliments on it than I did my old Dynomax.
Old 01-21-2005, 04:35 PM   #10
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Ya after a few months it definitly gets louder, just wait itll be a big diff. At least for my single/single it changed alot.
Old 01-21-2005, 05:01 PM   #11
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Re: Just installed Flowmaster 40-Single In, Dual Out...

No, sorry I don't have a digital camcorder to upload a sound clip. But I can tell you that it sounds NOTHING like the sound clip of the blazer on their website. That sound clip is of a single inlet/single outlet Z77 series muffler. The Z77 is about 2 1/2 feet long and is their quietest performance muffler. Also just a side note. I am running the slp y-pipe and I have run the jba headers but removed them in favor of the stock manifolds for now. Due to having an ext. cab with only a 3.08 gear in the rear I lost way to much low end with the headers and y-pipe. If I ever get around to installing the 3.73 gears and zexel (which has been sitting around for almost 2 years now) I might try the headers again. If not it is no big deal cuz someone will buy them.
Old 01-21-2005, 05:07 PM   #12
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
Due to having an ext. cab with only a 3.08 gear in the rear.
You are wrong there. If you have a Ext. Cab auto you have 3.42's in the rearend. You can not get an auto with 3.08 gears. 3.08's only come in the 5-speeds.
Old 01-21-2005, 07:21 PM   #13
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Re: Just installed Flowmaster 40-Single In, Dual Out...

So are telling me that I am wrong? Thats funny, the GU4 (which is the code for 3.08 gears) on the Service Parts Identification tag in my glove box says otherwise. You should always becareful when using the following words Always, Never, and Only. You can usually find exceptions to just about everything and I guess that my truck is one of those exceptions. It is an Ext. Cab with 3.08 gears in an open carrier.
Old 01-21-2005, 07:24 PM   #14
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Re: Just installed Flowmaster 40-Single In, Dual Out...

damnit i had bought a single in dual out Z-33 that i wanted to put on my jimmy. i can't run dual outs without losing my spare tire though so i just took the flow 40 he had off the shelf so i could get something. i really wanted my Z-33 though
Old 01-21-2005, 07:29 PM   #15
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Re: Just installed Flowmaster 40-Single In, Dual Out...

That Z33 is a VERY LOUD muffler, but so is the Z55 if run with turndowns. I tried turndowns on mine and could only take it for a couple of days before I went back to have pipes run. I had a constant headache while driving it with turndowns.
Old 01-21-2005, 07:29 PM   #16
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
So are telling me that I am wrong? Thats funny, the GU4 (which is the code for 3.08 gears) on the Service Parts Identification tag in my glove box says otherwise. You should always becareful when using the following words Always, Never, and Only. You can usually find exceptions to just about everything and I guess that my truck is one of those exceptions. It is an Ext. Cab with 3.08 gears in an open carrier.
So is mine!
I like the flowmaster exhaust sound clip, but I'd love to hear a Magnaflow, that's what I'm leaning more towards.

Last edited by ZQ8 NOMA; 01-21-2005 at 07:31 PM.
Old 01-21-2005, 07:36 PM   #17
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by NCarolinaS10
My Flowmaster 40 may not have "broken in" but it has definately changed (gotten louder) in the 10 months I've had it. I love my Flowmaster and I've gotten many more compliments on it than I did my old Dynomax.
Thats because a Dynomax still sounds stock..
Old 01-21-2005, 07:36 PM   #18
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
That Z33 is a VERY LOUD muffler, but so is the Z55 if run with turndowns. I tried turndowns on mine and could only take it for a couple of days before I went back to have pipes run. I had a constant headache while driving it with turndowns.
yeah i don't want turndowns. the reason i want dual outs is cause i like the look of them straight back damn you now i want my Z-33 even more
Old 01-21-2005, 08:10 PM   #19
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Re: Just installed Flowmaster 40-Single In, Dual Out...

If you decide to get it please keep me informed. I also have been thinking about switching from the 55 to the 33 series.
Old 01-21-2005, 09:08 PM   #20
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Re: Just installed Flowmaster 40-Single In, Dual Out...

it will take a month or so to break in
Old 01-21-2005, 09:29 PM   #21
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by dropt98chevy
it will take a month or so to break in
I noticed a change right after it was installed... I considered that a big enough improvement
Old 01-21-2005, 10:48 PM   #22
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Re: Just installed Flowmaster 40-Single In, Dual Out...

either way its waay better than stock. got my single catback flow 40 for 160 installed.... definitely worth it.
Old 01-21-2005, 11:15 PM   #23
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
So are telling me that I am wrong? Thats funny, the GU4 (which is the code for 3.08 gears) on the Service Parts Identification tag in my glove box says otherwise. You should always becareful when using the following words Always, Never, and Only. You can usually find exceptions to just about everything and I guess that my truck is one of those exceptions. It is an Ext. Cab with 3.08 gears in an open carrier.
3.08 in an auto? damn thats gotta suck.
Old 01-22-2005, 11:16 AM   #24
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Well it wouldn't have been my choice for gears thats for sure, but I bought from dealers stock. As a matter of fact it was the only v6-auto truck they had on the lot in July of 2000. I do have a Zexel and a new set of 3.73 gears that will get installed one of these days. I have had them now for almost 2 years and something always comes up everytime I try to get them installed. I can tell you that a 3.08 isn't the worst gear I ever ran though. Years ago I had a built 1974 Corvette 350 with nothing to put it in. I found a 1980 Malibu that the owner thought had a blown motor and sold it to me for $75.00. The car was a four door car, but for $75 bucks who cares. This was a sleeper in the making. Turns out the only thing wrong with the car was a burnt positive battery cable. Later after running the rearend numbers at the local dealership I found out that the car came from the factory with a 2.29 gear in an open carrier. Now that gear SUCKS. Even so with that gear-carrier combo combined with a stock tranny and no traction I was still able to pull off low 9 second 1/8 mile times.
Old 01-22-2005, 11:27 AM   #25
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Re: Just installed Flowmaster 40-Single In, Dual Out...

Quote: Originally Posted by madman7703
Yep, thats a Flowmaster alright. Tin can sound, not deep enough and way to much interior resonance. That is why I hated mine and made the switch. Like you said, "To each his own". Again, I am not flaming anyone who likes a flowmaster. It just isn't my cup of tea.
I love the tin can sound, nothing better really, i hate muffled deep tones, sounds like it has no balls. But it sounds even better with no cats!! Listen here....

http://img.s10forum.com/JWX-SIGS/aao.wmv

its kinda old, from last summer but you get the idea, sounds 1000 times better in person too
Old 01-22-2005, 11:31 AM   #26
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Re: Just installed Flowmaster 40-Single In, Dual Out...

BTW here is my brothers cammed 4.3 with no cats, stock manifolds, stock y-pipe and a spintech muffler

http://img.s10forum.com/JWX-SIGS/aaa.wmv
Old 01-22-2005, 01:31 PM   #27
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Re: Just installed Flowmaster 40-Single In, Dual Out...

liked the spintech sound much better than the flow. Way to much popping in that one. What cam is he using?
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