boonie c4

I'm schedule to pickup a set of 08 NPP mufflers tomorrow and I have the vacuum module, sothen what other additional parts will I need to buy to complete my NPP exhaust system project? And where can I buy those additional parts?
Thanks Boonie

Dcasole

Not sure what vacuum module you are talking about, if you are talking about the factory original vacuum switch ... that's to much work ......

If u are retro fitting to a car that does not have NPP do a search on NPP IN A BOX , it will come with everything you need and simple instructions . I recommend using the alternate vacuum line routing down the passenger side instead of thru the tunnel , it is much easier to do

Dave

Dave

lawson1603

Their is a write up on here (https://www.corvetteforum.com/forums...ne-intake.html). Works great.

Brandon619

That's an awesome DIY and great if you want to put together some other than the provided factory vacuum location. The NPP in a box is simple and effective way to install a NPP exhaust to a non-NPP car

lawson1603

Yes and it was cheaper and no worry of vacuum leak and took all of 20 min to install and didn't have to crawler under the car.