CorvetteForum - Chevrolet Corvette Forum Discussion

C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

NPP install

Thread Tools
 
Search this Thread
 
Old Dec 1, 2021 | 07:44 AM
Share
  #1  
wood78221's Avatar
wood78221
Thread Starter
Racer
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: Jun 2020
Posts: 274
Likes: 43
From: Vestavia Hills, AL
Default NPP install
I have an 09 base with previous NPP exhaust, apparently someone sold them and replaced with Flowmasters. The sound is great but drone is killer. I am looking at going back to NPP, however will I need a new vacuum kit or can I just do the Mild to Wild kit?
Reply
0
Old Dec 1, 2021 | 02:18 PM
Share
  #2  
MNcorvetteC6's Avatar
MNcorvetteC6
Pro
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Dec 2017
Posts: 592
Likes: 54
From: Plymouth Minnesota
Default
I do not think the NPP was available as an option for the base 2005 - 2009 models. Likely you will be starting from scratch.
Reply
0
Old Dec 1, 2021 | 02:19 PM
Share
  #3  
wood78221's Avatar
wood78221
Thread Starter
Racer
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: Jun 2020
Posts: 274
Likes: 43
From: Vestavia Hills, AL
Default
Originally Posted by MNcorvetteC6
NPP was not available as an option for the base 2005 - 2009 models. Likely you will be starting from scratch.
thats odd, it’s on my code sticker


Reply
0
Old Dec 1, 2021 | 02:21 PM
Share
  #4  
farmington's Avatar
farmington
Safety Car
 
Joined: Aug 2017
Posts: 4,243
Likes: 1,133
From: North Myrtle Beach SC
Default
It was available 2008-2013. If the original vacuum lines and rear solenoid are still in place, just hook up the vacuum lines to the mufflers and go
Reply
1
Old Dec 1, 2021 | 07:58 PM
Share
  #5  
RetroGuy's Avatar
RetroGuy
Melting Slicks
Community Favorite
 
Joined: May 2018
Posts: 2,091
Likes: 600
From: Question Government
Default
You could always research keeping your aftermarket exhaust and see if an X-pipe and/or resonator tubes would get rid of the drone.
Reply
0
Old Dec 3, 2021 | 10:44 PM
Share
  #6  
jim11157's Avatar
jim11157
Racer
10 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Mar 2013
Posts: 387
Likes: 16
From: Rocky Hill Connecticut
Default

Hooker Blackheart Rear View

Front View

Close up of Vac. Controls
Reply
0

Get notified of new replies

To NPP install

Back to Subforum
C6 Tech/Performance
View Next Unread
15 inch conversation kit fitment




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 06:13 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE