101 Corvette Projects A collection of Do It Yourself projects for the C5 and C6 Corvette

19Oct/090

Corvette C6 NPP Retro-Fit for Multi Mode Exhaust

NPP in a box, a set of NPP mufflers and a M2W switch will give you an incredibly easy way to have just the sound you want, when you want, if you have a pre-2008 C6. In my case, throw in a set of LG headers, and you have rolling thunder at the flick of a switch. The combo of the headers and the NPP in Wild gives you AMAZING sound and "HEY, LOOK AT ME!!!" volume…the tonality and sound is that of a NASCAR stock car at WOT outside the car, yet quieter and less drone inside the car than the GHL exhaust I was so fond of. The install is very straight forward, easier with a lift, but as Ed has shown with his car, you can do it on jack stands. Here are some pics and descriptions of the step by step process; you will receive complete illustrated instructions with your purchase.

NPP Mufflers waiting for Install


Factory Exhaust Removed


Run the Vacuum tubes through existing frame locations




After dropping the rear sway bar, snake the NPP mufflers up and over



Attach the pipes to the mufflers


Connect the vacuum hoses to the NPP mufflers


Make sure your muffler pipes are straight and level


Muffler hardware done and vacuum tubing run


And of course, a quick run with Ed's Polishing kit




That's all there is to it.....All that's left is to go out there and have a blast with your new found customized sound.