npp 2007 2008 ?
Thread Starter
Racer
Joined: Mar 2002
Posts: 345
Likes: 0
From: decatur il
npp 2007 2008 ?
I have a 2008 coupe with npp and mild to wild,and a 2007 vert that i just had the same system put on.The 2008 is louder and a deeper growl. Could the reason be the differance in engine size or what?
Safety Car
Joined: Aug 2007
Posts: 4,836
Likes: 9
From: Rushsylvania Ohio
Now I might be wrong, but I believe the x-pipe and cats are also different on the 07's and earlier. These items were changed when the 08 LS3 came out and that might be what is causing the sound difference.
Drifting
Joined: Feb 2000
Posts: 1,405
Likes: 18
From: Danville IL
Hey there bops90 ---
We'll have to compare sometime. I put the NPPs on my 05 and it is much louder (valves closed) than my friend's 08 with valves closed.
Ever get over to Champaign??? How about the RR museum in Monticello?
We'll have to compare sometime. I put the NPPs on my 05 and it is much louder (valves closed) than my friend's 08 with valves closed.
Ever get over to Champaign??? How about the RR museum in Monticello?
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Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
The C6 Z06 muffler inlet is 2.5", same as the C6. The Z06 has 3" pipe up to the muffler inlet but the pipe is reduced to 2.5" at the muffler.
Team Owner
Joined: Jan 2007
Posts: 22,136
Likes: 23
From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
So, you didn't compare them with the valves open?
Team Owner
Joined: Jan 2007
Posts: 22,136
Likes: 23
From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
The 08 has a true Xpipe on it from the factory.
Melting Slicks
Joined: Oct 2003
Posts: 2,655
Likes: 5
From: Brea CA
ah,,
BOTH the Z06 and C6 NPP have 3 1/2" Chrome Tips... a bunch of people here keep saying the Z06 is bigger, not true... The Non-NPP is smaller...
You can tell the Z06 Muffler, by looking INSIDE the Chrome tips, if it is smooth, it is Z06, if it is punched with a bunch of small holes, it is NPP. Night & Day for sound difference.
You can tell the Z06 Muffler, by looking INSIDE the Chrome tips, if it is smooth, it is Z06, if it is punched with a bunch of small holes, it is NPP. Night & Day for sound difference.
Thread Starter
Racer
Joined: Mar 2002
Posts: 345
Likes: 0
From: decatur il
Well i figured it out the guy sent me one 2008 npp and one Z06,the left one has no perforated holes inside,oh he said he was sorry and going to send another monday.How about the install and shipping is what I will ask monday.Why does this sh%& always happin to me?
