08 Vette with exhaust problems
Thread Starter
1st Gear
Joined: Jul 2013
Posts: 1
Likes: 0
From: McLean VA
08 Vette with exhaust problems
I have a 2008 Corvette with 74,000 miles and the car has the factory option dual exhaust. Recently the exhaust has become extremely noisy, regardless or RPM. I have had the exhaust system checked by the dealer and it has no leaks.
During the last visit to the dealer the tech explained the problem as broken/defective valves at the exhaust header end of the exhaust pipes. They are lose and rattle making a metallic noise thru the exhaust pipes and well existing unusually loud exhaust. They suggested the only cure was to replace the entire exhaust system claiming each side is a single part; cost for both sides is about $2800. Before I elect to do this, I thought I would check to see if anyone in the Forum had heard of similar problems.
TGD
During the last visit to the dealer the tech explained the problem as broken/defective valves at the exhaust header end of the exhaust pipes. They are lose and rattle making a metallic noise thru the exhaust pipes and well existing unusually loud exhaust. They suggested the only cure was to replace the entire exhaust system claiming each side is a single part; cost for both sides is about $2800. Before I elect to do this, I thought I would check to see if anyone in the Forum had heard of similar problems.
TGD
Racer
Joined: Oct 2011
Posts: 475
Likes: 3
From: Jacksonville TX
I am going to take a wild guess on your problem with the price you stated. The stealership wants about $1200 per muffler for the NPP. I assume you are hearing a rattling or metal vibration in your exhaust. I did this post on mine.
http://forums.corvetteforum.com/c6-c...p-muffler.html
Partstaxi a forum vendor sells the mufflers for the best price i have found. I have the part numbers listed below.
2008 & down
15879289
15879288
2009 & Up
25839149
25839148
http://forums.corvetteforum.com/c6-c...p-muffler.html
Partstaxi a forum vendor sells the mufflers for the best price i have found. I have the part numbers listed below.
2008 & down
15879289
15879288
2009 & Up
25839149
25839148
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 25
From: Austin Texas
I have a 2008 Corvette with 74,000 miles and the car has the factory option dual exhaust. Recently the exhaust has become extremely noisy, regardless or RPM. I have had the exhaust system checked by the dealer and it has no leaks.
During the last visit to the dealer the tech explained the problem as broken/defective valves at the exhaust header end of the exhaust pipes. They are lose and rattle making a metallic noise thru the exhaust pipes and well existing unusually loud exhaust. They suggested the only cure was to replace the entire exhaust system claiming each side is a single part; cost for both sides is about $2800. Before I elect to do this, I thought I would check to see if anyone in the Forum had heard of similar problems.
TGD
During the last visit to the dealer the tech explained the problem as broken/defective valves at the exhaust header end of the exhaust pipes. They are lose and rattle making a metallic noise thru the exhaust pipes and well existing unusually loud exhaust. They suggested the only cure was to replace the entire exhaust system claiming each side is a single part; cost for both sides is about $2800. Before I elect to do this, I thought I would check to see if anyone in the Forum had heard of similar problems.
TGD
Replacing the "entire" exhaust system would be MUCH more than$2800, there are 7 major pieces + gaskets, clamps and bolts.
You need a second opinion, preferably from someone that understands the NPP mufflers. There is a chance the muffler valves can be repaired instead of replacing the full muffler/overaxle section of both sides.
There are used NPP mufflers For Sale sometimes here on the Forum.
Instructor
Joined: Jun 2013
Posts: 180
Likes: 0
If you want an NPP muffler replacement that will sound and look better than OE and produce more power you might be interested in our Fusion System. MSRP is $1,890 - which is much less than $2,100 for new OE mufflers.
You can check Fusion out at http://www.bbexhaust.com/car/corvette/c6fusion/
You can check Fusion out at http://www.bbexhaust.com/car/corvette/c6fusion/
Last edited by Jon@bbexhaust; Jul 31, 2013 at 03:08 PM.
Safety Car
Joined: Apr 2004
Posts: 4,532
Likes: 7
From: Lahaina Hi
Not sure what your asking but vaccum control the mufflers on the NPP and you may have a leak.You can also have the fuse blown and the exaust would be loud all the time.Or are you talking about a rattle at the rear of the car that could be the exaust?
