First off, a tremendous thank you to Ed….He’s more than an innovator, more than an engineer, he’s a true friend that designs great modifications for our cars because of his love of the Corvette and the happiness it brings us all…any profit he makes goes into R&D of the next useful accessory for the C6….it’s an honor being able to call him my friend. Often imitated by others, Ed’s designs and customer service are unbeatable; any one who has dealt with him knows exactly what I am talking about. I’m the luckiest guy around…every time I mention “I wish I had a ……” Ed responds, "I’m already working on that, give me a few weeks…."

Also, thank you to Gene Culley at GMPartsHouse.com for a great GP purchase price and next day delivery. Gene was the only GM parts vendor who stepped up, I e-mailed others about pricing and availability and no one returned my requests. Gene once again has proven he is the man to see when you want any GM parts.

And of course, thanks to my buddy Tony, the best mechanic a guy could ever know, and I'm lucky enough to have him work with me on his day off...all for a Ham, Egg and Cheese sandwich....I guess I better give Christmas bonuses this year, huh???


Ok, on with the show…..

Ed’s 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



Drilling a ¼” hole in the rear well



Run the Vacuum Tube though the hole



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



Locate vacuum nipple in well



Place NPP controller in bottom and attach vacuum and power lines



Place new false bottom on top of the controller, you can still store items here (Does that look perfect or what???)



Connect power cable to the Seat Heater Fuse



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.

Here's a link to a video of the sound
Play Video

Ed, once again, THANK YOU!!!!

 

Thanks for the wonderful writeup. I just put on some Melrose headers yesterday and was thinking seriously about adding NPP with NPP in a Box controller. The exhaust tips looker nicer too on the NPP than my 07 exhaust.
My only other option would be to add cut outs at the pre-muffler and install electric butterfly valves and then you can open them to any level you want.
Decisions,decisions?????

 

Nice write up and the video was
Sounds great

 

Now thats a super mod, If there is enough left after the Holiday's I'm sure ill be interested! Once again, give it up for Ed

 

Simply amazing .Ed never seems to amaze us.I can see lots of these being purchased.. Way to go Ed

 

Looks like I found my new exhaust!

 

Wow, thanks for the post but the on your face was worth it all Nice shine on them tips

 

Great right up craig, it sounds crazy, great work by Ed.

 

You could have done it far cheaper with 2 solenoids and some wire.

Just pulling your chain. I see you had Tony there for the install so what do you care how easy it is to do it?

I expect a ride....I get to do the button pushing for the muffs.

I like it; good job Ed!

 

Thanks, guys! You REALLY have to hear it in person....at normal cruise, even in Wild mode, the interior drone is gone, and it is much quieter than my GHLs (I can finally here the wonderful humming of the FAST) ...yet lay it to the floor, and as awesome as it sounds inside, outside the car, it is louder and deeper than bullets... stand behind the car at 4k and you have to cover your ears...Even Tony said it was the best mod we've ever done...and I'm glad it was easy...this way I only had to buy Tony breakfast....you know how he eats for dinner....

It took a lot to make me smile after the last week or so, but I'm still grinning like a kid on Christmas....sure hope the forecast is wrong and it doesn't rain tomorrow.

And Guy, or course you can push the buttons, besides the remote, I have Homelink so I'm lucky enough to control it from the visor.

 

Great write up Ed is amazing

 

Okay Craig,

So when can I hear the NPP setup with LG's?

Looks great Ed!

Judd

 

Whats a ballpark figure for the mufflers ?

Looks and sounds great!

 

ok, I am sold on the whole setup. Just found my new exhaust.

Great write up. Thanks for convincing me.

 

Hi Judd,

After the rain passes in the next few days, we can meet up.


To everyone else,

I've already received quite a few PMs about sound/volume etc. As soon as the weather cooperates, I will do a video post, inside/outside, cruising, drone zone, WOT, etc. If Spin gets back from Memphis, we'll also use his db meter and post actual decibels (I think the readings behind the car are going to make many say )

I will add it to this thread, hopefully by the end of the week.

 

sweet, but man you had to do, now I'm probably going to spend more money

 

thats all I can say amazing ed.............he is the best period

 

Awesome!!!

How much more difficult will it be to install the NPP in a box with NPP mufflers *already* installed? Thanks...

 

I did mine with the mufflers in, it's just a little easirer with nothing installed to drape the vacuum line through the hangers but even with the mufflers in and laying upside down it is still very simple. That is the only item impacted

 

I will be using a lift, so even with the mufflers installed it should be very simple.