NPP conversion questions
Thread Starter
Drifting
Joined: Nov 2007
Posts: 1,290
Likes: 2
From: Eagle ID
NPP conversion questions
Who has done this on a pre-08 C6 and how well did it work? Did you notice any HP or performance gain? I'm guessing not. I did a search without much luck...I probably need remedial search instruction.
I am so tempted to spring for the mufflers after seeing/hearing the video clip. Seems a bit spendy when compared to after market exhaust, but I like the options it provides.
I am value driven (read that frugal) but sent my check to support this forum today. This is a great place and I appreciate it.
I am so tempted to spring for the mufflers after seeing/hearing the video clip. Seems a bit spendy when compared to after market exhaust, but I like the options it provides.
I am value driven (read that frugal) but sent my check to support this forum today. This is a great place and I appreciate it.
Moderator
Joined: Dec 2002
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From: Lakewood Ranch, FL
It has been done. There are a couple of options - do an OEM conversion - there is a thread on this. (See Talon90's search tutorial sticky). Pipedreams (Ed at Nakid parts) has a system that controls the OEM NPP/Z06 muflers without all the installation hassles.
Race Director
Joined: Jan 2005
Posts: 13,656
Likes: 7
From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07
You are in luck I have done it and it's great. I also developed the first stand alone system to run the NPP so in 15 min or less you save around $200+ and do need all those GM parts
modshacks system sounds great and I now have the NPP on my 2005 but no headers
Here is much more including videos
LINK TO MY PRODUCT AND INSTALL
modshacks system sounds great and I now have the NPP on my 2005 but no headers
Here is much more including videos LINK TO MY PRODUCT AND INSTALL
Last edited by Pipedreams; Dec 3, 2007 at 09:41 PM.
Thread Starter
Drifting
Joined: Nov 2007
Posts: 1,290
Likes: 2
From: Eagle ID
Pipedreams,
Yeah, I know you did it. It was your d*amn video that got me into this mod fever. By the way, the mud flaps arrived today. Thanks.
I'll look for that sticky. Appreciate your patience with this newbie.
Yeah, I know you did it. It was your d*amn video that got me into this mod fever. By the way, the mud flaps arrived today. Thanks.
I'll look for that sticky. Appreciate your patience with this newbie.
Safety Car
Joined: Aug 2006
Posts: 4,206
Likes: 6
From: Makena, Maui & NM
From everything I have been told about it.....it wont give you any extra hp and will sound about the same as your current stock system with the NPP valve closed. With it open, it will sound wild and loud and you also will get some drone. If you are considering adding headers, it would give you both option worlds, still quiet and very loud.
But personally, if you dont plan headers, for the same money or maybe less, I would go for a Corsa Sport system. Sounds good all the time, not too quiet and not too loud and Corsa is the only aftermarketer that guarantees no drone.
But personally, if you dont plan headers, for the same money or maybe less, I would go for a Corsa Sport system. Sounds good all the time, not too quiet and not too loud and Corsa is the only aftermarketer that guarantees no drone.
Safety Car
Joined: Mar 2006
Posts: 3,538
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From: Pasadena, CA
However, the corsa has an "exotic" higher pitched tone to it, I do not like that at all. The NPP has a deep, muscular sound which I prefer.
Race Director
Joined: Jan 2005
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From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07
Safety Car
Joined: Aug 2006
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From: Makena, Maui & NM
Well...that depends on what you compare it to. If you have driven, say, some Ferrari's like I have, there is no way the Corsa could compare as an "exotic" high pitched system. It sure doesnt sound "exotic" to me. Plus, the issue of having absolutely NO drone with my A6 was more important to me than the sound.
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Safety Car
Joined: Mar 2006
Posts: 3,538
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From: Pasadena, CA
Well...that depends on what you compare it to. If you have driven, say, some Ferrari's like I have, there is no way the Corsa could compare as an "exotic" high pitched system. It sure doesnt sound "exotic" to me. Plus, the issue of having absolutely NO drone with my A6 was more important to me than the sound.
Safety Car
Joined: Aug 2006
Posts: 4,206
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From: Makena, Maui & NM
In fact, am in the process of getting headers and was seriously considering going NPP for that. However after talking to some, it appeared it would be too quiet in mild mode and too loud in wild mode. So am adding them with my Corsa's...should be ok at lower revs and louder but not wild at high revs...and still no drone. Still....its possible with those new hi flo cats it might get into a higher pitch tone and indeed sound like an exotic Ferrari!
Safety Car
Joined: Mar 2006
Posts: 3,538
Likes: 9
From: Pasadena, CA
Yes, that is good...and true In fact, am in the process of getting headers and was seriously considering going NPP for that. However after talking to some, it appeared it would be too quiet in mild mode and too loud in wild mode. So am adding them with my Corsa's...should be ok at lower revs and louder but not wild at high revs...and still no drone. Still....its possible with those new hi flo cats it might get into a higher pitch tone and indeed sound like an exotic Ferrari!
In fact, am in the process of getting headers and was seriously considering going NPP for that. However after talking to some, it appeared it would be too quiet in mild mode and too loud in wild mode. So am adding them with my Corsa's...should be ok at lower revs and louder but not wild at high revs...and still no drone. Still....its possible with those new hi flo cats it might get into a higher pitch tone and indeed sound like an exotic Ferrari! Funny how we're all in different situations. I won't ever go the headers route, not because it's a bad idea, it's just nor for me. I was seriously considering B&B route 66, but it's a bit to mellow. On the other hand, the B&B bullets are too loud. The NPP(wild) is right between them, that's perfect! I was considering Corsa, but from what I've read, they have a higher pitched sound than the NPP, not for me.
Safety Car
Joined: Aug 2006
Posts: 4,206
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From: Makena, Maui & NM
Funny how we're all in different situations. I won't ever go the headers route, not because it's a bad idea, it's just nor for me. I was seriously considering B&B route 66, but it's a bit to mellow. On the other hand, the B&B bullets are too loud. The NPP(wild) is right between them, that's perfect! I was considering Corsa, but from what I've read, they have a higher pitched sound than the NPP, not for me.
I like the idea of headers cutting about .35 off my ET, but am not so hot about really LOUD noise. For sure I am keeping my stock manifolds and cats around, cuz I could be switching back to them...real soon! I really like my Sports....they could be a bit louder...so we'll see.
Le Mans Master
Joined: May 2006
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From: The left Coast
St. Jude Donor '08
So, I'm trying to get my head around this. I have ARH's with GM performance mufflers. Can I simply install the NPP mufflers and the pipedream controller? Or is there more to it than that?
Race Director
Joined: Jan 2005
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From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07
Race Director
Joined: Jan 2005
Posts: 13,656
Likes: 7
From: Bay Shore, NY 11706 MILD2WILD (M2W)
St. Jude Donor '06-'07