Hey everyone, just want to start out by saying I already have the npp exhaust fuse pulled so the baffolds stay open all the time, and I absolutely love the sound. I would be ok with keeping it like this. I am just wondering if there are any quick, legal ways to make the exhaust even louder than it already is (which is pretty loud)

thanks guys!

 

A lot of guys on the forum are going with a new X pipe. I am going to put on the new Corsa Double Helixx X Pipe. Or you could also put on Mid Length Headers as well as the X pipe.

 

I'm waiting for my Borla ATAK and X pipe to come in.

 

Take the mufflers off and run a straight pipe with a corsa tip.

 

How do I take the mufflers off? When it comes to mechanic type work on cars I'm not the greatest. You guys make it sound so easy lol.

 

im hoping, but doubting, someone will make a bolt up kit for this instead of having to go to a muffler shop and get custom pipes bent. best mod to any car ive ever done was pulling the resonator and mufflers off my c4. even with an xpipe and valves open the c7 doesn't sound like my old c4 did. I miss that sound...

 

cut off your exhaust with a sawzall is the quickest way to make it louder.

 

thats what im looking for!

 

Options:

1 - put an x-pipe on. Either the Borla or Corsa double helix. It will make it a little louder and change the sound some. I did it, liked it, but not enough for me. I would do it again. A step in an overall exhaust build out process and reasonable.

2 - do a muffler delete. I have not done this on the Stingray. Others have done it here on the forum. Not my recommendation due to drone but others are very supportive. Recommend doing research on sound / drone. I've done it other cars and the volume / drone was too much for me; IMHO. You cut the mufflers out and put in straight pipes and a set of tips. If you have NPP, you will need to zip tie the NPP valve actuators off to the side under the car to avoid throwing a check code.

3 - aftermarket mufflers. With NPP, you need to decide if you want to maintain NPP functionality or not. That will significantly reduce your available selection if you want to keep NPP; supported by primarily BillyBoat Fusion and Borla dual mode (like Atak) systems only. If you don't care about NPP support, you have all kinds of additional, cheaper options, in systems. If you go non NPP support route, you will need to zip tie the NPP valve actuators off to the side under the car to avoid throwing a check code. Second, maintain AFM functionality or not; there is more support for AFM (valve back) options. If you decide on a system that does not support the AFM valves, like NPP, you would need to zip tie those actuators off to the side also.

I went Borla dual mode Atak mufflers and combined up with the Corsa double helix x-pipe. The Borla (as well as BillyBoat Fusion) support AFM and NPP both.

4 - headers and a tune. There are long tube, shorties, catted,and non-catted options. However, even with shortie and cats, you will "most likely" need to also put a tune in to eliminate the probability of a check engine error light being thrown due to the location or non-existence of the cats that are monitored. Sound volume is reported to be much louder with this change even with the remainder of the stock exhaust in place, between the headers and tune you get a bigger bump in performance...

Here is mine with Corsa double helix and Borla dual mode Atak installed:



This one mainly shows the NPP function with the Borla system:

 

WHOA stop the train.........

You don't have to pull any fuse, if you go into the radio and set your driving preferences you can leave the valves open all the time.
As far making the car sound louder and really mean, install a set of headers on it. Our C7 has an awesome growl to it.

 

that doesn't keep them open all the time, they still close

 

The NPP, even if set to open all the time, is still closed under like 15 or 1700 rpms. Ive pulled the fuse and put it back in, it sounds like a tractor when your in econ mode and it kicks down to 4 clyinder mode, and it actually drones more.


I'll have to look into the x pipes

 

For us newbies, pls explain what headers are and is there a photo of a c7 Vette and approx what would total cost be to do this? THANKS

 

Dose this apply to 2014 ? and is 2015 different as somewhere on this thread suggested?



Dose it matter if its Auto or Manual? So to summarize pulling fuse is not the way to go and only makes Eco mode sound awful .

 

If you go into the drivers setting and turn the sound management, you can either turn the valves on for the switch or you can disable them. My valves are always open and haven't opened the fuse box.

 

Is it a Z06? The regular models without the fuse pulled have a tip in around 1700 RPMS where the settings you've manipulated won't matter. The only way to remedy this (easily at this point) is to pull the fuse.

 

Headers replace the exhaust manifolds.

http://www.zip-corvette.com/2014-201...h-headers.html

Click on my link above and you can see a picture of them. If you scroll down on that page I also have a video of the car and what it sounds like with the valve open and closed. This is stock exhaust with headers.

 

Push the loud pedal harder...

Glad I could help!

 

eliminate mufflers

 

they will still close under certain conditions. otherwise there would be no need to pull the fuse.