Convert from STD to NPP?
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,756
Likes: 267
Convert from STD to NPP?
I’m considering purchase of ‘11 GS with std exhaust. I’d like to convert it to NPP and have been looking for ‘how to’ info regarding the vacuum hook up. Muffler install is straight forward but I’d need info on how to hook up the actuators and haven’t found any info. Seems like there has to be something out there. TIA.
Pro
Joined: Oct 2024
Posts: 716
Likes: 396
From: WI
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,756
Likes: 267
Pro
Joined: Feb 2021
Posts: 729
Likes: 317
From: Ashevile, NC
While that package works, I did it myself for about $25-$30 worth of parts! Bought rubber tubing, found a vacuum switch on E-bay for a few bucks, need a "T" fitting for vacuum line right front of the motor, mounted the switch under the dash by right knee. Routed the tubing through the rocker, behind the right rear inner fender liner, used a "T" fitting above the axle and ran a short hose to each valve. Works great.
Drifting
Joined: Jun 2014
Posts: 1,431
Likes: 233
From: Chicago Illinois
I’ve been using it for about three years with no issues. When my wife is in the car, I close the valves to keep it quiet. When I’m driving by myself, I open the valves. This also helps reduce drone noise during highway drives.
