headers + NPP
Former Vendor
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
With the valves closed....it is almost stock. When they go open, typically I see them go up about 4 to 5 times louder than before.
Thread Starter
Racer
Joined: Mar 2012
Posts: 388
Likes: 0
From: NC
i know i know...im a rude neighbor to all around me. but i have that wonderful sounding LS3 so i might as well make it extremely heard throughout where i live haha. im curious to see how loud it will be with npp open and closed
Thread Starter
Racer
Joined: Mar 2012
Posts: 388
Likes: 0
From: NC
Burning Brakes
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
I have ARH 1-7/8's with cats. I had the NPP, but recently changed to new style Borla Touring. I was going to get the "S" type, but I talked to Borla and they said it would drone on the highway with headers.
The NPP sounded great open at full throttle, but to me the drone with them open on th highway was really annoying. Closed I thougt it was too quiet.
After having the Borlas for a while I'm pretty pleased, but I would not have spent the bucks had I known just how they would sound.
Some day when I want to waste ever more money, I may sell them and try something else. Next time I will have to hear it on a car first.
If there is any way you can hear someones car first hand before you decide, I really urge you to do it. Everyone's taste seem to run differently when it comes to sound.
The NPP sounded great open at full throttle, but to me the drone with them open on th highway was really annoying. Closed I thougt it was too quiet.
After having the Borlas for a while I'm pretty pleased, but I would not have spent the bucks had I known just how they would sound.
Some day when I want to waste ever more money, I may sell them and try something else. Next time I will have to hear it on a car first.
If there is any way you can hear someones car first hand before you decide, I really urge you to do it. Everyone's taste seem to run differently when it comes to sound.
Thread Starter
Racer
Joined: Mar 2012
Posts: 388
Likes: 0
From: NC
I have ARH 1-7/8's with cats. I had the NPP, but recently changed to new style Borla Touring. I was going to get the "S" type, but I talked to Borla and they said it would drone on the highway with headers.
The NPP sounded great open at full throttle, but to me the drone with them open on th highway was really annoying. Closed I thougt it was too quiet.
After having the Borlas for a while I'm pretty pleased, but I would not have spent the bucks had I known just how they would sound.
Some day when I want to waste ever more money, I may sell them and try something else. Next time I will have to hear it on a car first.
If there is any way you can hear someones car first hand before you decide, I really urge you to do it. Everyone's taste seem to run differently when it comes to sound.
The NPP sounded great open at full throttle, but to me the drone with them open on th highway was really annoying. Closed I thougt it was too quiet.
After having the Borlas for a while I'm pretty pleased, but I would not have spent the bucks had I known just how they would sound.
Some day when I want to waste ever more money, I may sell them and try something else. Next time I will have to hear it on a car first.
If there is any way you can hear someones car first hand before you decide, I really urge you to do it. Everyone's taste seem to run differently when it comes to sound.
Burning Brakes
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
i appreciate the help! im like my npp...i just want it to be nice and loud open, then quiet closed so i can still cruise on the highway somewhat. it sounds like it will be perfect for me. and i have mild to wild remote too. is your borla touring quieter than the npp was when it was open?
I think the Borla my be just a little quieter open at full throttle than the NPP.
Thread Starter
Racer
Joined: Mar 2012
Posts: 388
Likes: 0
From: NC
cool deal i appreciate it! im excited. it does sound like its exactly what im looking for. right now my car is just all around too quiet haha. everybody on the forums have helped me out a ton. its a lot different on here than on the cobalt forums (i daily drive a cobalt ss turbo). maturity is slightly different with vette owners haha
Drifting
Joined: May 2006
Posts: 1,709
Likes: 18
From: Montgomery Il.
I have a 2008 A6 with Kooks 1-3/4" coated headers, high flow cats/X-pipe, CAI, Pro tune running though the stock NPP mufflers. Closed it's slightly louder than stock someone not familiar with the car would not notice anything. Open the car sounds like there are no mufflers on it at all way too loud driving around town. Yes, I realize the NPP's are straight though when open. At WOT though the gears the car is insane loud even the tuner could not believe how loud it is. Think open headers.
Your results may vary.
Your results may vary.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Safety Car
Joined: Sep 2006
Posts: 4,075
Likes: 6
From: Wilmington NC
Open the car sounds like there are no mufflers on it at all way too loud driving around town. Yes, I realize the NPP's are straight though when open. At WOT though the gears the car is insane loud even the tuner could not believe how loud it is. Think open headers.
Your results may vary.
Your results may vary.
My results exactly with AR 1 7/8" headers and NPP exhaust.