sirsenna

My car currently has B&B Bullets, and with the G5X3 cam, LG longtubes, I find it quite loud, especially the highway drone.

I'm thinking of going Z06 bi-mode or NPP. After reading a few treads on here, I'm still confused with the difference between the two.

What I'm looking for is near stock quiet in mild mode, to near B&B Bullet loud when in wild mode.

Can I acheive this with Z06 mufflers and the mild2wild kit? If so, what year Z06 mufflers should I look for? Will these bolt on directly to my LG longtube header x-pipe?

thanks

Denis

NYC6

I have NPP's on my S/C car. Also have LG tubes w/ cats. They say Z06 exhaust is a little less loud than NPP's. When closed my car is as quiet as stock, open it sounds like straight pipes! I was suprised how loud it is. If you have headers I dont think you'll be disapointed with the ROAR! Of course sound is a subjective thing but everyone whos driven in my car comments on the sound. you can find Z06 exhaust cheaper than NPP usually but the NPP is an easy swap. Z06 requires a bit more fabrication. I also have NPP in a Box controlling the butterflies.

Velocity2008

Hi sirsenna

I have a complete 07 ZO6 exhaust system with the ZO6 muffler mod and Ed's NPP in a box. The NPP is louder than the stock ZO6 bi-modals. However, with a ZO6 muffler mod I think they're close. With the ZO6 muffler mod I estimate a 40% increase in the exhaust note. However, it's still wisper quite with the valve closed. I'm making 415/404 at the rear wheels and when you put you foot into it roars. Btw - it no drone with the valve closed and has very little drone with it open. I also did a back to back dyno comparison: valve closed = 402 open = 411

The ZO6 muffler has 3" over axel pipes attached so if u're at 2.5" you'll need to reduce it down.

Thanks, Dewman

NYC6

A nine hp jump nice.

sirsenna

what about exhaust tips? I have bullets and I love how they fill out the back of my car. Are the Z06 tips bigger in dia than than C6 NPP?

Velocity2008

I believe the ZO6 tips are smaller. I had Corsa Sports on prior to the ZO6's and I think there closer to the BB's tip size.

NYC6

Z06 and NPP are both 3 1/2", one half inch bigger than stock.

0SonOfDreams

Since you already have the headers just get the 3" x pipe extensions and you can bolt up the Z06 muffers add out npp in a box to control them and you good

Just 4 2

have you looked at Quicktime performance?

sirsenna

where do I get the 3" extensions? Also, I read on eof your earlier posts are you prefered the NPP over Z06. Any reasons?