NPP Installation Question

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Oct 3, 2010 | 09:55 PM

Tahoe Dave

Thread Starter

Racer

Joined: Nov 2007

Posts: 288

Likes: 0

From: Genoa Nevada

NPP Installation Question

I have a 2005 Coupe and may be installing a set off NPP's off of a 2008. I will be purchasing the Mild to Wild kit which I will install a few days after the exhaust is on.

My question is, if I ran a vacuum line to the NPP's, without the kit, would they stay closed at lower RPM and open on hard acceleration?

Thanks for your input...

Oct 3, 2010 | 10:10 PM

K9KUZ

Drifting

Joined: Feb 2000

Posts: 1,405

Likes: 17

From: Danville IL

Quote:

Originally Posted by Tahoe Dave

NO. I did this to my 05 last year. They would stay open all the time without any vacuum. The presence of a vacuum closes the valves. Note: run the vac line from the front of the manifold, not the back. (The instructions on the m2w at that time were a bit confusing as they covered both engines.) Have fun.

Also Victory Red here.

Oct 4, 2010 | 12:12 AM

haljensen

Race Director

Joined: Mar 2005

Posts: 10,399

Likes: 25

From: Austin Texas

Quote:

Originally Posted by Tahoe Dave

If you run a vacuum line the baffles will close as soon as the engine builds vacuum. Without an exhaust controller they will stay closed with the vacuum line.

No vacuum = open baffles.
Vacuum = closed baffles.
Exhaust controller = Your choice of open or closed but no RPM control unless you buy the Sunset Orange Creations controller with RPM control.

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