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3" True duals louder than 2.5"? H-pipe?

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Old 05-09-2008, 01:22 AM
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Default 3" True duals louder than 2.5"? H-pipe?

I am going to be running it under the axle to tips out the back.

Well I have already ordered a 2.5" X-pipe and 2.5" Flowmaster single chambers... but I want my car to be loud as hell. But I am wondering how much louder 3 inch would be over 2.5"...also if X or H pipe would be louder. I've also read about H-pipes sounding better and giving more of that old school "big block" sound.

So Im considering sending the x and 2.5" flows back and ordering 3" flows and 3" H-pipe. I am not going to be looking at huge hp numbers in the future so that is not a factor. I also *might* consider lowering 1-1.5" in the future. So what do y'all think? I want it to scare the **** out of people.

PS: I'm also going to be running long tubes...

Last edited by Spiers; 05-11-2008 at 11:31 PM.
Old 05-09-2008, 03:01 AM
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umm for get the flow get the bullets if u are stuck on being loud, and a proven way to be loud would be to get slp lm1 ory and lt's.....or that same setup with borla open plate!!!!!! both are loud and if u ever add a cam it will be rediculous
Old 05-09-2008, 11:48 AM
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...no one's changing my mind on the flows. I like the sound of them. I'm just asking if 3" will be much louder than 2.5", and about the H pipe...not suggestions on other brand exhausts.
Old 05-09-2008, 12:00 PM
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Yes. I went from 2.5" to 3" and it is noticably louder. However, mine is exccentuated due to the cam. I would not recommend my exhaust setup for a DD driven car. It is too loud to be driven everyday IMO. When I get the chance i will pick up a DD and use it as a weekend car.

Bottom Line: The 2.5" w/ LTs and X pipe will be EXTREMELLY loud. You should consider running it under the axle to reduce cabin noise. The bullets make for a good setup, but the car will be ******* loud. Also, if you are considering lowering the car I would strongly suggest the 2.5". My 3" has some clearence issues, and my car is at stock ride height.
Old 05-09-2008, 12:25 PM
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Thanks for the input landonew...and yes as I stated in my first post I will be running them under the axle and out the back!
Old 05-09-2008, 06:30 PM
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2.5 for ground clearance. it should be pretty damn loud when you mash on it.
Old 05-09-2008, 07:58 PM
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True duals are to loud for daily driving for sure
Old 05-11-2008, 10:43 PM
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Anyone else with input?!
Old 05-11-2008, 11:29 PM
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A dumped h-pipe with flows is going 2 be freakin loud
Old 05-12-2008, 06:19 AM
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As long as you run it out the back, a dual 3" exhaust with the Flowmaster single chambers isn't that loud inside the car. Mine is on par with my old ORY and Corsa setup. Outside the car the duals seem to be much louder.
Old 05-12-2008, 07:43 AM
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If you plan on lowering, 2.5" will be your best bet.
I daily drive my car w/ 3" Flowmaster td's and have no clearance issuses. It's loud and very deep. I get a lot of compliments on it every time I drive it. People ask all the time if its got a big block in it! I love it! I included pics of what I used for a crossover. Its kinda a cross between a "h" and "x"
Attached Thumbnails 3" True duals louder than 2.5"? H-pipe?-flowmaster.jpg   3" True duals louder than 2.5"? H-pipe?-inside.jpg  

Last edited by JBIRD02; 05-12-2008 at 11:54 AM.
Old 05-12-2008, 04:49 PM
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^^^I love the Flowmaster D-port H-pipe. If I ever go true duals, which I REALLY want to, I want to get that crossover with single chambers Too bad Flowmaster increased the price of single chambers by over $20 EACH and raised the price on the D-port a lot, too!
Old 05-12-2008, 06:02 PM
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Originally Posted by ChocoTaco369
^^^I love the Flowmaster D-port H-pipe. If I ever go true duals, which I REALLY want to, I want to get that crossover with single chambers Too bad Flowmaster increased the price of single chambers by over $20 EACH and raised the price on the D-port a lot, too!
Yeah, I know I noticed that too when I was looking up parts the other day. I got lucky and got in before the price increase. The mufflers were $72ea. and the crossover kit was like $150.
believe it or not, that D-port crossover changed the sound a lot. I already had a 3" x-pipe setup with the same mufflers I have now, and switching to the D-port crossover made it sound deeper.
Old 05-12-2008, 06:48 PM
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Originally Posted by Prerun4fun13
True duals are to loud for daily driving for sure
not true....i have passed local cops, deputies, state police not one has fucked with me. 3 inch h pipe dynomax bullets dumped.
Old 05-12-2008, 09:20 PM
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Originally Posted by JBIRD02
Yeah, I know I noticed that too when I was looking up parts the other day. I got lucky and got in before the price increase. The mufflers were $72ea. and the crossover kit was like $150.
believe it or not, that D-port crossover changed the sound a lot. I already had a 3" x-pipe setup with the same mufflers I have now, and switching to the D-port crossover made it sound deeper.
I came across them the other day on Summit and the mufflers were like $95 a pop and the D-port crossover was like $220. I was like HOLY CRAP It wouldn't be so bad if Flowmaster would make something in STAINLESS!!! All that money for mass produced aluminized steel pipe
Old 05-12-2008, 10:27 PM
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Originally Posted by 01ssreda4
not true....i have passed local cops, deputies, state police not one has fucked with me. 3 inch h pipe dynomax bullets dumped.
I dd my car and everyone i know thinks it is too loud to be a dd. I have 3" duals with an x-pipe and dynomax bullets dumped at the axle.

Wait until you get a somewhat aggressive cam and you might change your opinion.

When i just had this setup without a cam it was not too loud at all but the cam really made it LOUD!
Old 05-12-2008, 11:13 PM
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Originally Posted by JBIRD02
If you plan on lowering, 2.5" will be your best bet.
I daily drive my car w/ 3" Flowmaster td's and have no clearance issuses. It's loud and very deep. I get a lot of compliments on it every time I drive it. People ask all the time if its got a big block in it! I love it! I included pics of what I used for a crossover. Its kinda a cross between a "h" and "x"
Do you have any video/sound clips of your car?
Old 05-13-2008, 12:48 AM
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Originally Posted by ChocoTaco369
I came across them the other day on Summit and the mufflers were like $95 a pop and the D-port crossover was like $220. I was like HOLY CRAP It wouldn't be so bad if Flowmaster would make something in STAINLESS!!! All that money for mass produced aluminized steel pipe
Yeah I know, right! I'm with ya on the stainless part! Glad I got mine when I did
Originally Posted by Spiers
Do you have any video/sound clips of your car?
No, not yet, I'm working on it though. When I get one I will definately post it up!
You will definately love the sound of the 3" single chambers if you decide to go that route. As a matter of fact, do a search for jmm98ls1. He has some clips of his td's with 2.5" single chambers on his car. We actually have the same cam.
Here, I found it, see if the link works https://ls1tech.com/forums/member.php?u=35625

Last edited by JBIRD02; 05-13-2008 at 12:57 AM.
Old 05-13-2008, 12:53 AM
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Flow singles are plenty loud....whoever says otherwise is crazy.



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