Exhaust question
Thread Starter
Instructor
Joined: Feb 2006
Posts: 131
Likes: 0
From: Haslet Texas
Exhaust question
I have an '07 coupe, all stock, no mods yet. I was wondering if anyone has tried to use an after market exhaust setup, long tube headers, upgrade the cats and the x pipe, but when you get to the mufflers, what about the NPP's?
reason is I want the horse power but this is a DD and i think that the drone from any after market muffler will get to me after a while.
Just a thought in my head.
thoughts?
reason is I want the horse power but this is a DD and i think that the drone from any after market muffler will get to me after a while.
Just a thought in my head.
thoughts?
Safety Car
Joined: Aug 2006
Posts: 4,347
Likes: 25
From: Apache Junction AZ
Give serious consideration to the B&B Fusion BiModal axle back. There are posts on this forum by members that have switched from NPP to the Fusion and are glad they did. Drone is not a problem.
BJK
BJK
Last edited by 07MontRedcp; Jun 4, 2008 at 09:59 AM.
Race Director
Joined: Sep 2001
Posts: 11,907
Likes: 1
From: Between a rock and a hard place, S.E. PA
The stock exhaust is not that restrictive to begin with so don't be afraid of keeping it if you like the sound. Most upgrade the exhaust purely for sound. And most will agree the C6 needs it.
It's like buying a widescreen TV and listening to a movie through an AM radio. Upgrading the exhaust is like buying better speakers (and a mondo subwoofer).
It's like buying a widescreen TV and listening to a movie through an AM radio. Upgrading the exhaust is like buying better speakers (and a mondo subwoofer).
Burning Brakes
Joined: Jan 2007
Posts: 1,094
Likes: 0
From: Dallas TX
Honestly, as far as drone goes... most A/M exhaust do not drone. In fact, people are constantly talking about how their exhaust has no drone. There are some systems that do drone and if you do not like this then you should stay away from those. The ones that are known to have some drone are: B&B Bullets, Magnaflows, SLP Loudmouth. I am sure there are some more.
As far as drone goes, some people claim they hear drone on some a/m exhuasts and some people claim absolutely no drone on those same exhausts.
My suggestion to you: Go out and find some people in your area, if you can, and take a ride and listen to their exhaust and see if you like it/can deal with it daily.
I have bullets and I noticed drone pretty early on. But, there are easy ways around it (If you have an M6) and after about 3 days of driving the car with bullets, I hardly noticed the sound anymore. Plus, the bullets sound so good driving around town/WOT that the drone is worth it!
If you want absolutely no drone, but still want it to sound good when you get on it. I would look into the Touring version of either Corsa or Borla. Those exhausts will be relatively quiet at idle, with no drone, but will def have some scream to them when you get on them. The NPP's will sound pretty nice. They might not sound as good/loud as a lot of other a/m exhaust, but they will still def improve the sound! Also, any exhaust even the stock one for that matter, sounds pretty good with headers! Headers improve the sound loudness, deepness and quality in my opinion.
Good luck with whatever you decide!
As far as drone goes, some people claim they hear drone on some a/m exhuasts and some people claim absolutely no drone on those same exhausts.
My suggestion to you: Go out and find some people in your area, if you can, and take a ride and listen to their exhaust and see if you like it/can deal with it daily.
I have bullets and I noticed drone pretty early on. But, there are easy ways around it (If you have an M6) and after about 3 days of driving the car with bullets, I hardly noticed the sound anymore. Plus, the bullets sound so good driving around town/WOT that the drone is worth it!
If you want absolutely no drone, but still want it to sound good when you get on it. I would look into the Touring version of either Corsa or Borla. Those exhausts will be relatively quiet at idle, with no drone, but will def have some scream to them when you get on them. The NPP's will sound pretty nice. They might not sound as good/loud as a lot of other a/m exhaust, but they will still def improve the sound! Also, any exhaust even the stock one for that matter, sounds pretty good with headers! Headers improve the sound loudness, deepness and quality in my opinion.
Good luck with whatever you decide!
Last edited by Bad06vette; Jun 4, 2008 at 11:56 AM.
Pro
Joined: Apr 2005
Posts: 702
Likes: 82
From: Ronkonkoma NY
St. Jude Donor '08-'09
I have an '07 coupe, all stock, no mods yet. I was wondering if anyone has tried to use an after market exhaust setup, long tube headers, upgrade the cats and the x pipe, but when you get to the mufflers, what about the NPP's?
reason is I want the horse power but this is a DD and i think that the drone from any after market muffler will get to me after a while.
Just a thought in my head.
thoughts?
reason is I want the horse power but this is a DD and i think that the drone from any after market muffler will get to me after a while.
Just a thought in my head.
thoughts?
Racer
Joined: Jan 2008
Posts: 254
Likes: 0
From: Old Forge PA
What about this:
http://209.61.166.115/ProductDetails...roductCode=DMH
The Vendor recently made a thread about it, but I can't find it.
http://209.61.166.115/ProductDetails...roductCode=DMH
The Vendor recently made a thread about it, but I can't find it.
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Pro
Joined: Mar 2006
Posts: 579
Likes: 0
What about this:
http://209.61.166.115/ProductDetails...roductCode=DMH
The Vendor recently made a thread about it, but I can't find it.
http://209.61.166.115/ProductDetails...roductCode=DMH
The Vendor recently made a thread about it, but I can't find it.
Race Director
Joined: Jan 2005
Posts: 13,656
Likes: 7
From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07
this is how we added NPP (bi-mode) to a 2005
NPP in the box (self contained system to run NPP on any C6) installed in 10 minutes, the guys at his shop were blown away that a car could sound like this. Craig set it to start up with the flaps closed (a simple flip of the switch and you can change it to start open) but when he opened them and hit the gas while I was setting up the camera, I almost went deaf, thanks Craig.
Here is a video I did with my still camera (so it's not great), will take time to load (I can not emphasize enough that you need to turn up the volume and you need a good speaker system (with bass) or a good set of headphones). I have the bose II on my PC and my cabinets shake in the wild mode.
Notice how the inner flaps open and close
Play Video
Here is a repost of Craigster05 post in the tech section
NPP in the box (self contained system to run NPP on any C6) installed in 10 minutes, the guys at his shop were blown away that a car could sound like this. Craig set it to start up with the flaps closed (a simple flip of the switch and you can change it to start open) but when he opened them and hit the gas while I was setting up the camera, I almost went deaf, thanks Craig.
Here is a video I did with my still camera (so it's not great), will take time to load (I can not emphasize enough that you need to turn up the volume and you need a good speaker system (with bass) or a good set of headphones). I have the bose II on my PC and my cabinets shake in the wild mode.
Notice how the inner flaps open and close
Play Video
Here is a repost of Craigster05 post in the tech section
Originally Posted by craigster05
Ed’s NPP in a box, a set of NPP mufflers and a M2W switch will give you an incredibly easy way to have just the sound you want, when you want, if you have a pre-2008 C6. In my case, throw in a set of headers, and you have rolling thunder at the flick of a switch. The combo of the headers and the NPP in Wild gives you AMAZING sound and “HEY, LOOK AT ME!!!” volume…the tonality and sound is that of a NASCAR stock car at WOT outside the car, yet quieter and less drone inside the car than the GHL exhaust I was so fond of. The install is very straight forward, easier with a lift, but as Ed has shown with his car, you can do it on jack stands. Here are some pics and descriptions of the step by step process; you will receive complete illustrated instructions with your purchase.
NPP Mufflers waiting for Install
Factory Exhaust Removed
Drilling a ¼” hole in the rear well
Run the Vacuum Tube though the hole
Run the Vacuum tubes through existing frame locations
After dropping the rear sway bar, snake the NPP mufflers up and over
Attach the pipes to the mufflers
Connect the vacuum hoses to the NPP mufflers
Make sure your muffler pipes are straight and level
Muffler hardware done and vacuum tubing run
Locate vacuum nipple in well
Place NPP controller in bottom and attach vacuum and power lines
Place lid on top, you can still store items here (Does that look perfect or what???)
Connect power cable to the Seat Heater Fuse
And of course, a quick run with Ed's Polishing kit
That's all there is to it.....All that's left is to go out there and have a blast with your new found customized sound.
NPP Mufflers waiting for Install
Factory Exhaust Removed
Drilling a ¼” hole in the rear well
Run the Vacuum Tube though the hole
Run the Vacuum tubes through existing frame locations
After dropping the rear sway bar, snake the NPP mufflers up and over
Attach the pipes to the mufflers
Connect the vacuum hoses to the NPP mufflers
Make sure your muffler pipes are straight and level
Muffler hardware done and vacuum tubing run
Locate vacuum nipple in well
Place NPP controller in bottom and attach vacuum and power lines
Place lid on top, you can still store items here (Does that look perfect or what???)
Connect power cable to the Seat Heater Fuse
And of course, a quick run with Ed's Polishing kit
That's all there is to it.....All that's left is to go out there and have a blast with your new found customized sound.
Instructor
Joined: Jul 2006
Posts: 157
Likes: 0
From: Waterloo IL
If you are doing headers, x-pipe, etc. stay away from the Flowmasters.
They have a terrible resonance at 1500-1700 rpm. They were fine with the stock manifold and H-pipe, but after installing headers and X I do everything I can to stay away from that rpm range.
They have a terrible resonance at 1500-1700 rpm. They were fine with the stock manifold and H-pipe, but after installing headers and X I do everything I can to stay away from that rpm range.