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Old 01-15-2012, 02:26 AM   #1
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Question quistion about Magnaflow 3' with kooks headers ?

hi guys

i have magnaflow catback 3' and i'm thinking to buy new kooks LT headers , i just wanna know with this Mixture , what about the sound in capain while driving ?

L99
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Old 01-15-2012, 03:12 AM   #2
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I dont have kooks but I do have TSP LT Headers with the 3 inch magnaflow cat back and I must say its nice. There is some drone but not enough to piss my wife off so it is tolerable.
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Old 01-15-2012, 03:21 AM   #3
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i wish not getting drone or much louder noise because my wife will not get in with me next , i'm sure she'll say to me : know your car builded for race ! LOL
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Old 01-15-2012, 04:32 PM   #4
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I've heard the drone get quite bad! The drone on my solo cat back wasn't bad until I added headers but j pipes fixed that. 100 percent no drone now at regular drivin speeds it's as quite as can be inside!
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Old 01-15-2012, 04:43 PM   #5
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Drone is not bad at all.
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Old 01-15-2012, 05:43 PM   #6
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I have that set up and its not bad at all I mean if you are trying to hear it you will just drive the car and its not bad
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Old 01-15-2012, 08:41 PM   #7
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I haven't heard any drone with it at all. It's a very good setup...actually I wouldn't want it any quieter.
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Old 01-15-2012, 09:26 PM   #8
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I never have understood why people pay extra for the 3" systems. The 3" Magnaflow for instance necks down to 2.5" in the front to connect to the factory barrel clamp. Additionally..maybe not with Magnaflow as much, but other systems, the 3"s ones almost always drone more because they do not pressurize the exhaust gas as much. The exhaust gas not being pressurized creates more resonance. I am making 650 rwhp and still have room to grow through 1 3/4" stepped to 1 7/8" Kooks, and a 2.5" Borla Stinger.
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Old 01-15-2012, 09:48 PM   #9
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im running 2 1\2" and my buddy is running 3 and we have almost exact same mods and i actually dynoed 2 hp better. So that whole 3'' vs 2 1\2 is a joke to me!
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Old 01-15-2012, 10:12 PM   #10
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Dual 2.5" is plenty for 90 percent of the folks on here. Honestly.
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Old 01-15-2012, 10:20 PM   #11
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Dual 2.5" is plenty for 90 percent of the folks on here. Honestly.
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Old 01-15-2012, 10:31 PM   #12
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actually the 3 inch that I have does not neck down to 2.5. The Cats are 2.5 in and 3 inch out.

I got 3 inch because of the deeper growl and for my future upgrade of FI.
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Old 01-15-2012, 10:34 PM   #13
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How did a thread about the sound in the cabin after adding headers to a magnaflow 3" turn into a pissing contest of which is better 3 or 2.5 ???

Maybe I read it wrong but I dont think that has anything at all to do with what the OP asked
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Old 01-15-2012, 11:28 PM   #14
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Quote:
Originally Posted by simonmcnasty View Post
How did a thread about the sound in the cabin after adding headers to a magnaflow 3" turn into a pissing contest of which is better 3 or 2.5 ???

Maybe I read it wrong but I dont think that has anything at all to do with what the OP asked

yes that's alwayes happen , it's like u ask some one what time is know? and he explane to u how they build the watch !! LOOL
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Old 01-15-2012, 11:34 PM   #15
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I have KOOKS LT headers with KOOKS high flow CATS and the Magna-flow #16483 3" CAT Back. You will have drone at 1800 RPM in 6th gear. Anybody who tells you that you won't is just trying to sell you something.
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Old 01-15-2012, 11:42 PM   #16
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I'm not trying to sell anything but I will admit I don't drive on the highway very much.

I'll try to make a mental note to specifically listen at that RPM in 6th gear next time.

I have driven it on the highway a handfull of times and never remember hearing any drone. I'm still going to keep my stance that I have yet to hear any drone with this setup.
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Old 01-16-2012, 12:04 AM   #17
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I'm not trying to sell anything but I will admit I don't drive on the highway very much.

I'll try to make a mental note to specifically listen at that RPM in 6th gear next time.

I have driven it on the highway a handfull of times and never remember hearing any drone. I'm still going to keep my stance that I have yet to hear any drone with this setup.
Please let Me know. It could have been my install too.
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Old 01-16-2012, 12:31 AM   #18
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Quote:
Originally Posted by simonmcnasty View Post
How did a thread about the sound in the cabin after adding headers to a magnaflow 3" turn into a pissing contest of which is better 3 or 2.5 ???

Maybe I read it wrong but I dont think that has anything at all to do with what the OP asked
I have found that most of the people looking for 3" exhausts are doing so because someone told them it made more power, sounded better, or whatever. I was making the point that this is not true, and deciding you only wants a 3" exhausts limits your choices and almost always means you will pay more than a comparable 2.5" exhaust.
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Old 01-16-2012, 02:27 AM   #19
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I've got the same setup as SSooch, and it does drone at 1800 rpm in 6th, but it depends on the engine load. If you've got a tail wind, or are going slightly downhill the drone is not as bad--it increases with load. I'd say the drone is slightly louder with the Kooks and Magnaflow 3" than the GMPP 2/5" axle-back I had before I added the headers and 3" cat-back. Nothing either J-pipes or a 500W subwoofer wouldn't fix.
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Old 01-16-2012, 06:43 AM   #20
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Drone is pretty bad.
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Old 01-16-2012, 07:09 AM   #21
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Quote:
Originally Posted by MarylandSpeed View Post
I have found that most of the people looking for 3" exhausts are doing so because someone told them it made more power, sounded better, or whatever. I was making the point that this is not true, and deciding you only wants a 3" exhausts limits your choices and almost always means you will pay more than a comparable 2.5" exhaust.


OP ALREADY HAS 3" Magnaflow, so the merits of 3 vs 2.5 is a moot point. He's question was concerning sound after adding headers not which system cost less or makes more HP.

I have the exact Magnaflow and headers he is refering too, and my advice is that it is not bad. However that is based simply on my opinion and experience with other cars..exhaust and drone, I'm sure others will disagree. The only time I notice it is in 6th gear on the interstate and compared to my previous cars the drone is very very minor, I love the Kooks/Magnaflow combination.

Again opinions will vary as everyone will have different thoughs as to what sounds good or what is acceptable.

Hope this helps you OP.
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Old 01-16-2012, 09:03 AM   #22
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Originally Posted by MarylandSpeed View Post
I never have understood why people pay extra for the 3" systems. The 3" Magnaflow for instance necks down to 2.5" in the front to connect to the factory barrel clamp. Additionally..maybe not with Magnaflow as much, but other systems, the 3"s ones almost always drone more because they do not pressurize the exhaust gas as much. The exhaust gas not being pressurized creates more resonance. I am making 650 rwhp and still have room to grow through 1 3/4" stepped to 1 7/8" Kooks, and a 2.5" Borla Stinger.

So you still get drone even after a tune? I had my AFM turned off because this is what I thought caused the drone?
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Old 01-16-2012, 10:24 AM   #23
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Quote:
Originally Posted by MarylandSpeed View Post
I never have understood why people pay extra for the 3" systems. The 3" Magnaflow for instance necks down to 2.5" in the front to connect to the factory barrel clamp. Additionally..maybe not with Magnaflow as much, but other systems, the 3"s ones almost always drone more because they do not pressurize the exhaust gas as much. The exhaust gas not being pressurized creates more resonance. I am making 650 rwhp and still have room to grow through 1 3/4" stepped to 1 7/8" Kooks, and a 2.5" Borla Stinger.
In that case, I dont understand why people buy a cat back at all.... Stock system has been proven to make the same power as any of the cat backs out there up to 600+ rwhp...

That being said, I bought the 3" Magnaflow purely for sound. I had the Dynatech headers,cats, and a Corsa catback. Quiet on the highway? yup.. Sound like crap any other time? absolutely!!! I listened to countless sound clips of every header/catback combo and ended up with the 3" Magnaflow... Perfect around town.. Yes a little resonance on the highway at 1800 rpm in 6th... Fixed that by putting the car in 5th gear...
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Old 01-16-2012, 12:09 PM   #24
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I got mine for sound only i never said or was thinking it would give me more HP i just liked the deeper sound
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Old 01-20-2012, 03:33 PM   #25
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hi guys

i have magnaflow catback 3' and i'm thinking to buy new kooks LT headers , i just wanna know with this Mixture , what about the sound in capain while driving ?

L99
I have the Magnaflow 16483 along with the KOOKS 1-7/8" LTs w/cats on my Camaro and it is a great combination. I've heard a ton of combinations and drone is very subjective. The 16483 along with LT's in my opinion is a good compromise between great WOT sound and cabin noise. You can hear a little resonance around 1800 RPM when you're lugging it but you can still have a conversation and it doesn't rattle your brain. Although the 3" tubing doesn't help with performance below 600 RWHP I still like the deep sound at idle, it is all subjective.

Please feel free to call, email or PM me anytime with questions! Good luck and have a great weekend!

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