npp on ls2 vette?
Thread Starter
Pro
Joined: Jul 2008
Posts: 647
Likes: 5
npp on ls2 vette?
I know its prolly been asked but how easy is it to add a 08 npp exhaust system on a ls2 vette and make it work just like a 08. Ive heard a few diff exhausts and I like the low muscular tone. ALso, how much are people selling the npp systems
Safety Car
Joined: Sep 2006
Posts: 4,364
Likes: 408
From: Greer, SC
It will never work exactly like the 08 NPP system works but you can get it close. Retrofiting the NPP system to an LS2 is pretty basic. You then need to get the NPP control module from www.nakidparts.com Once you have this and the actual NPP hardware you should be all set.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
It will never work exactly like the 08 NPP system works but you can get it close. Retrofiting the NPP system to an LS2 is pretty basic. You then need to get the NPP control module from www.nakidparts.com Once you have this and the actual NPP hardware you should be all set.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
Racer
Joined: Mar 2009
Posts: 279
Likes: 1
From: McHenry IL
St. Jude Donor '10
Excellent info. I'll add that I did this and I like the retrofit system better. It gives you total control over your exhaust sound. Sometimes I want to be "stealth" when I get on it in order to not attract attention. With the factory setup it's going to get loud once you hit 3500 rpm. I can also keep it open when I want it to be loud all the time, even at idle. Great setup, one of the best mods I've done to my car. It sounds incredible at WOT with the NPP open along with my LG Pro headers.
How much louder did the headers make the exhaust compared to stock headers with NPP?
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
It will never work exactly like the 08 NPP system works but you can get it close. Retrofiting the NPP system to an LS2 is pretty basic. You then need to get the NPP control module from www.nakidparts.com Once you have this and the actual NPP hardware you should be all set.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
I have mine set to open at 3000rpm...
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Correct. But if you have the RPM controller set at x RPM, it will open then automatically. The controller take just a second to set up. So if you want to change the rpm that the flaps open at you just follow the setup instructions. Here is the link to Bens site. Very good vendor, keeps you informed as to order status...
http://shop.sunsetorangecreations.com/main.sc
Here is another like to a thread Ben started. He explains how the system works better than I can:
http://forums.corvetteforum.com/c6-c...-sale-now.html
http://shop.sunsetorangecreations.com/main.scHere is another like to a thread Ben started. He explains how the system works better than I can:
http://forums.corvetteforum.com/c6-c...-sale-now.html
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Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
NPP's are about $1200 new, and they are hard to find used. The Z06 mufflers usually go for around $400. They show up on the forum in the forsale section regularly, and on the auction site. I paid $300 for mine shipped..The Z06 will have to be taken to a muffler shop, cut your 2 1/2" pipes off, cut the 3" pipes off the Z06 cans and weld your 2 1/2" pipes onto the Z06 cans. The Z06 neck down to 2 1/2" anyway at the muffler.
This is about a 1.5-2 hr job.
This is about a 1.5-2 hr job.
Thread Starter
Pro
Joined: Jul 2008
Posts: 647
Likes: 5
NPP's are about $1200 new, and they are hard to find used. The Z06 mufflers usually go for around $400. They show up on the forum in the forsale section regularly, and on the auction site. I paid $300 for mine shipped..The Z06 will have to be taken to a muffler shop, cut your 2 1/2" pipes off, cut the 3" pipes off the Z06 cans and weld your 2 1/2" pipes onto the Z06 cans. The Z06 neck down to 2 1/2" anyway at the muffler.
This is about a 1.5-2 hr job.
This is about a 1.5-2 hr job.
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Melting Slicks
Joined: Dec 2006
Posts: 2,887
Likes: 2
From: Exhaust Commander Wireless Bi-Mode Exhaust Controllers, Innovative and advanced technology! --- Check out our website @ www.sunsetorangecreations.com
St. Jude Donor '13
I think the NPP bi-mode mufflers are great. They are the best of both worlds.
You can have it Loud when you want it and also whisper Quiet when you want.
With my Exhaust Commander All-in-1 bi-mode exhaust retrofit kit its easy to add to any C6.
I have many options available on my bi-mode exhaust retrofit kit. You can have user selectable rpm opening, you can open and close the exhaust from your dash DIC reset button, and you get a kit that remembers its last setting so that the position you turn the car off in is the position it will return to when the car starts. It comes standard with a wireless remote to open and close the butterflies from inside or outside the car.
Here is the CF thread that tells all about the Exhaust Commander NPP bi-mode retrofit kit. ---> Exhaust Commander All-in-1 NPP retrofit kit.
I have helped many people get their bi-mode exhaust up an running so feel free to contact me anytime for any information.
Ben
You can have it Loud when you want it and also whisper Quiet when you want.
With my Exhaust Commander All-in-1 bi-mode exhaust retrofit kit its easy to add to any C6.
I have many options available on my bi-mode exhaust retrofit kit. You can have user selectable rpm opening, you can open and close the exhaust from your dash DIC reset button, and you get a kit that remembers its last setting so that the position you turn the car off in is the position it will return to when the car starts. It comes standard with a wireless remote to open and close the butterflies from inside or outside the car.
Here is the CF thread that tells all about the Exhaust Commander NPP bi-mode retrofit kit. ---> Exhaust Commander All-in-1 NPP retrofit kit.
I have helped many people get their bi-mode exhaust up an running so feel free to contact me anytime for any information.
Ben
Last edited by SunsetOrangeCreations; Jun 3, 2009 at 02:31 AM.
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
Can he use the Z06 3" midpipe with the Z06 npp mufflers? I have a set of Z06 npp mufflers and midpipe off my 08 Z06, let me know if ya can use em. The midpipe could be reduced to 2.5" where it connects to the cats giving you a 3" system from the cats back
Last edited by vettl83; Jun 3, 2009 at 02:13 AM.
Melting Slicks
Joined: Dec 2006
Posts: 2,887
Likes: 2
From: Exhaust Commander Wireless Bi-Mode Exhaust Controllers, Innovative and advanced technology! --- Check out our website @ www.sunsetorangecreations.com
St. Jude Donor '13
The easiest route is to find actual C6 NPP bi-mode mufflers as they are a direct bolt in.
If you go the Z06 muffler route there is some fabrication that is needed to mate the Z06's 3 inch pipes to the 2.5 inch C6 pipes.
Ben
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
The Z06 mid-pipe will not bolt up to the Ls2 or LS3 cats. You would need to do some fabrication of the piping to make it work.
The easiest route is to find actual C6 NPP bi-mode mufflers as they are a direct bolt in.
If you go the Z06 muffler route there is some fabrication that is needed to mate the Z06's 3 inch pipes to the 2.5 inch C6 pipes.
Ben
The easiest route is to find actual C6 NPP bi-mode mufflers as they are a direct bolt in.
If you go the Z06 muffler route there is some fabrication that is needed to mate the Z06's 3 inch pipes to the 2.5 inch C6 pipes.
Ben
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
About a year ago I was kicking this same thing around for my '06 convertible. NPP's were even tougher to get hold of then so since I was looking at doing headers too I wound up putting on Z06 take-offs and LG Z06 headers, along with NakidParts NPP-in-a-box control setup. By going with the Z06 headers it gave me 3" pipe all the way back and a direct bolt-up to the mufflers. Was a fairly simple install, if a big learning curve for a first-timer not wanting to make any mistakes.
The result is killer. Closed the system sounds so good I rarely open it because open it sounds very close to straight pipes, absolutely SCREAMS when you jump on it. I am VERY happy with the results and those combined with a Vararam CAI, 160 tstat and a tune from ECS I have 381/392 at the rear wheels.
The result is killer. Closed the system sounds so good I rarely open it because open it sounds very close to straight pipes, absolutely SCREAMS when you jump on it. I am VERY happy with the results and those combined with a Vararam CAI, 160 tstat and a tune from ECS I have 381/392 at the rear wheels.
Former Vendor
Joined: Sep 2008
Posts: 2,695
Likes: 0
From: Brightwaters NY
St. Jude Donor '09
It will never work exactly like the 08 NPP system works but you can get it close. Retrofiting the NPP system to an LS2 is pretty basic. You then need to get the NPP control module from www.nakidparts.com Once you have this and the actual NPP hardware you should be all set.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
The 08 factory NPP system has vaccum lines that come from the engine and the computer triggers the butterflies to open at about 3500 RPM. With the retrofit system you control the butterflies with a remote. Unlike the 08 factory system the retrofit system will not open the butterflies automatically.
Here is more on you system from our current posts.
In our tradition of innovations in the world of Z06 and NPP exhaust control systems I am introducing a new retrofit system call “NPP in a box”. You provide the mufflers, I provide the rest. Sorry for the long read. Back at SEMA 2007 I worked with B&B to come up with a number of ways to control a Bi-mode retrofit system. It's the only kit included by one of the largest resellers of OEM NPP systems.
Always 100% ZERO drain and you choose the startup mode HAVE IT START OPEN OR HAVE IT START CLOSED and can change it anytime. I guarantee my system to be the easiest to install and best engineered or your money back.
To order: www.nakidparts.com
Here's a link to a video with headers Play Video
Link To NPP install Pictures in a 2005 with headers View Pictures
Use what the PRO's use - Thanks to LG, ECS, Vette Doctors, Corvettes of Westchester, Corvettes of Houston and the many other Chevy Dealers for choosing my system to install in their customers cars, they demand the best and so should you. If you have any concerns or questions about the quality or ease of installation feel free to call them an see why NPP in a box is their choice.
VetteDoctors (Carmen) “Your NPP system is the best on the market. Very easy to install & your service is second to none.”
East Cost Supercharging(Chris) “We installed one last week and I must say the product was very well put together and a smooth install.. Thanks”
Corvettes of Westchester(Chuck) "I can't say enough about the NAKIDPARTS NPP PRODUCTS! The kits are first rate! EVERYONE wants them! PRICE IS AWESOME!
SHIPPING IS ALMOST INSTANT! ED IS ALWAYS THERE TO HELP! What more could you want!?!?"
Some history of my efforts. It's simple to copy (as others have) what B&B did for its fusion system. I chose to completely reengineer my system to be much smaller, 50% less parts, You can tap the vaccum off the factory location or included on the LS2 is a unique e-z-tap (2 min install) and all parts are mounted inside the car for reliability. That’s the big difference you get from a nakidparts innovation, product that work correctly from the start. :thumbs:
You will always find instructions to my product available online, don’t you want to know what’s involved prior to install?Self contained vacuum system = My NPP in a box was developed and has sold well with over 300 units in use. NPP in a box provided a simple install and everything you needed including the vacuum. Available but on backorder due to demand.
Electric controlled = Although my first option B&B was not keen on the idea of removing the vacuum actuators and in early testing on the GM NPP it made almost no sound change between cracked open to full open. On the back burner.
Engine vacuum = B&B went on to used their own version on its fusion retrofit systems. I put it on the back burner as NPP in a box took 100% of my resources. I have received 100’s of PM and email asking for a low cost solution for owners that don’t mind running the vacuum line from the motor but still need a way to control the bi-mode (NPP / Fusion) exhaust.
Since I have extensive experience with my NPP in a box system, it was simple to develop a vacuum control system to meet the requests. My criteria and implementation is a little different than what is sold with the fusion systems in a number of ways.
1. The vacuum source off the motor had to be extremely simple to get. No removing coil packs or trying to access the back of the plenum and break off the unused vacuum line. It does not use the booster supply, so no worry there. On the LS2 it will take you less than 5 min to install the vacuum tap (no tools needed) a nakidparts innovation, approved and tested at vette doctors. On the LS3 you will use the rear OEM tap (see instructions)
2. Want innovations, I did not just copy the GM system. I developed a 100% new system where the control is no bigger than a box of Twinkies. All parts are encloed in the box (no seperate controler to install) and will be located 100% in the car (rear storage hatch) with both the wireless control and the vacuum controls safely housed inside so you have no weather issues. The power supply is in a heavy double shielded cable, 5 min no tools and nothing to pop off or remove.
3. Cost is $159 and will include everything needed, you just supply the exhaust. You just install the vacuum tap, run the provided vacuum line from the motor to the rear, run and install the provided power harness, install the control box and hook up the vacuum lines. The whole system will draw less than ½ amp, have zero drain with the car off and start either open or close. It is not designed to work with the car2u visor yet but will have Mild2Wild built in or ask about a custom unit with a foot switch.
4.Designed to work with both the B&B and the GM NPP system that are installed in a retrofit configuration.
like to see what your getting? - here it is
Last edited by SonOfDreams; Jun 4, 2009 at 06:37 AM.
Former Vendor
Joined: Sep 2008
Posts: 2,695
Likes: 0
From: Brightwaters NY
St. Jude Donor '09
here is the process on a C6 using headers and npp mufflers
Here is the complete process
Here is the complete process
NakidParts NPP in a box, a set of NPP mufflers 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 LG 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
Connect power cable to the Seat Heater Fuse
And of course, a quick run with Ed's Polishing kit
Nakidparts = NPP in a box
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.
Here's a link to a video of the sound
Play Video
Ed, once again, THANK YOU!!!!
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
Connect power cable to the Seat Heater Fuse
And of course, a quick run with Ed's Polishing kit
Nakidparts = NPP in a box
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.
Here's a link to a video of the sound
Play Video
Ed, once again, THANK YOU!!!!