quistion about Magnaflow 3' with kooks headers ? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SSOOCH · 01-15-2012, 11:34 PM

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.

caverman · 01-15-2012, 11:42 PM

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.

SSOOCH · 01-16-2012, 12:04 AM

Quote:

Originally Posted by caverman

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.

MarylandSpeed · 01-16-2012, 12:31 AM

Quote:

Originally Posted by simonmcnasty

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.

My 5th · 01-16-2012, 02:27 AM

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.

camslambam · 01-16-2012, 06:43 AM

Drone is pretty bad.

simonmcnasty · 01-16-2012, 07:09 AM

Quote:

Originally Posted by MarylandSpeed

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.

mpyle007 · 01-16-2012, 09:03 AM

Quote:

Originally Posted by MarylandSpeed

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?

1stGM · 01-16-2012, 10:24 AM

Quote:

Originally Posted by MarylandSpeed

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...

cm5217 · 01-16-2012, 12:09 PM

I got mine for sound only i never said or was thinking it would give me more HP i just liked the deeper sound

JDP Motorsports · 01-20-2012, 03:33 PM

Quote:

Originally Posted by sub zero

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!

Kind regards,

Jordan Priestley
888.308.6007

Drago77 · 01-20-2012, 04:10 PM

Magnaflow 2.5" comp cat-back and Stainless Works 1 7/8 no cats... horrendous drone from about 74mph-82mph with the top up. None down.

JDP Motorsports · 01-20-2012, 04:13 PM

Quote:

Originally Posted by Drago77

Magnaflow 2.5" comp cat-back and Stainless Works 1 7/8 no cats... horrendous drone from about 74mph-82mph with the top up. None down.

I can imagine! That is a combination I guarantee to have serious drone! You can add some Magnaflow mufflers or get the Street Series axle-back to basically create a 16579 (Street Series).

Kind regards,

Jordan Priestley
888.308.6007

SGOS252382 · 01-20-2012, 04:20 PM

I hate to say it now, because you already have the 3' system, but the Magnaflow Street Catback would have been a better choice for you.

The Magnaflow Street Catback keeps the drone and noise levels in check with long tube headers.

Long Tube headers make all catbacks (even the stock catback) significantly louder.

01-15-2012, 11:34 PM	#15
SSOOCH Camaro SL,UTs Drives: 2010 Camaro SS/RS #16429 Join Date: Sep 2006 Location: South Jordan, UT Posts: 7,358 View My Garage	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. __________________

01-16-2012, 02:27 AM	#19
My 5th Drives: 2010 2SS/RS M6 Black on Black Join Date: Jan 2010 Location: Global Citizen Posts: 1,243	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. __________________ Meh

01-16-2012, 12:09 PM	#24
cm5217 2K10 SS Drives: 2010 2SS/RS A6 SIM black stripes Join Date: Mar 2009 Location: Southern Maryland Posts: 356	I got mine for sound only i never said or was thinking it would give me more HP i just liked the deeper sound __________________ Tuned with HP tuners by Ryan at GPI...LS3 Conversion GPI SS3 Comp Cam...GPI Heads... GPI modded Intake...GPI built Transmission...Circle D 5C T.C....1 7/8 Kooks LT headers...Vararam tune CAI...Bo White TB...Powerbond 25% UDP...3.91 Gears...Magnaflow 3" Catback...RX catch can...BMR Trailing Arms...BMR Toe Rods...BMR Pro rear cradle bushing kit...Smoked Lenses...Black Chrome SS rims...Black Bowties...Painted Stripes...Barton shifter...Hydro Dipped engine cover...Clear Shield bra (front clip and hood)...

01-20-2012, 04:10 PM	#26
Drago77 Treasure Coast Camaro 5 Drives: 19 2SS vert, Mosaic Blk, A10 Join Date: Feb 2009 Location: Stuart, Florida Posts: 4,565 View My Garage	Magnaflow 2.5" comp cat-back and Stainless Works 1 7/8 no cats... horrendous drone from about 74mph-82mph with the top up. None down. __________________ My build:http://www.camaro5.com/forums/showthread.php?t=132722 http://www.treasurecoastcamaro5.com

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01-15-2012, 11:42 PM	#16
caverman Drives: '69 SS Convertible Join Date: May 2009 Location: DFW, TX Posts: 7,111	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. __________________ *-2010 Camaro* 2SS \| M6 \| VR w/White Stripes \| 1 3/4" KOOKS - 3" Magnaflow \| LPE 3.91 gears \| ADM tuned \| Halltech w/ADM Scoop \| Spohn/BMR Trailing Arm/Toe Rod \| BC Coilovers\| Pedders FE4 ZL1 swaybars \| Cradle/Diff/Radius Rod bushings \| VMax TB \| Morimoto Projectors \| MGW shifter \| Red Calipers Build Journal

01-16-2012, 06:43 AM	#20
camslambam Account Suspended Drives: 2010 SS, 06 SRT10 Ram Join Date: Nov 2011 Location: C. America Posts: 1,658	Drone is pretty bad.

01-20-2012, 04:20 PM	#28
SGOS252382 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008 Location: S.W. Florida Posts: 6,294	I hate to say it now, because you already have the 3' system, but the Magnaflow Street Catback would have been a better choice for you. The Magnaflow Street Catback keeps the drone and noise levels in check with long tube headers. Long Tube headers make all catbacks (even the stock catback) significantly louder.