C7 Muffler Delete with Custom 4.5" Quads

  • Thread starter Thread starter C7Jake
  • Start date Start date
Here's a shot on the lift with the 4.5's in place. On my way from the airport...pick the car up at 7pm
 
Total cost...tips/labor/material = $600
All stainless...fascia not removed
Solid/throaty race car sound, sedate enough when cruising, nice gurgle when slowing down. Noticeable power increase. Wife says it sounds like a Ferrari!





 
I love the looks and (by your description) sound.
A sound clip would be nice.

I presume you do not have NPP?

Since I do, do you think this will still work for me?

And, where can I acquire those tips from?

Thanks
 
AFM valves intact
Tip assembly centered in valance...1/2" clearance all around


 
C7Jake said:
AFM valves intact
Tip assembly centered in valance...1/2" clearance all around


Click to expand...

Jake, did you have the complete mufflers removed? If yes, are the tips simply welded onto the pipes? I have the NPP. If I had the mufflers removed and kept my stock tips with the NPP, then could I have a pipe welded from my tips to the AFM valves?
 
tyho said:
Jake, did you have the complete mufflers removed? If yes, are the tips simply welded onto the pipes? I have the NPP. If I had the mufflers removed and kept my stock tips with the NPP, then could I have a pipe welded from my tips to the AFM valves?
Click to expand...

Mufflers in a dumpster...tips clamped (pic) with a tack on each side.
If removing mufflers...absolutely pointless to retain stock tips/NPP :confused:
 
Last edited by a moderator:
C7Jake said:
Mufflers in a dumpster...tips clamped (pic) with a tack on each side.
If removing mufflers...absolutely pointless to retain stock tips/NPP :confused:
Click to expand...

Wow, how loud is the car and is it street legal?? I thought that by keeping the NPP I could control the noise. By closing the valves it quiets the exhaust for highway driving??
 
That car (in Texas) sounds exactly like I want mine to sound.
I am going to buy those Corsa tips, and do the "muffler delete" action.

Tyho, just so you understand, the NPP valves only control the outer
pipes of the tips... there is a butterfly valve inside each one (you can look directly into them and see the valve).
So it only closes the outer tips... not the inner ones.

I have NPP and am going to remove the mufflers and tips,
and then merely tuck the NPP connections out of the way.

Jake, did your guy cut your tips from the mufflers to remove,
or was he able to remove with tips intact?
I was just thinking that I might offer my NPP mufflers for sale if the tips could
be left intact.
 
Ntmd8r said:
That car (in Texas) sounds exactly like I want mine to sound.
I am going to buy those Corsa tips, and do the "muffler delete" action.

Tyho, just so you understand, the NPP valves only control the outer
pipes of the tips... there is a butterfly valve inside each one (you can look directly into them and see the valve).
So it only closes the outer tips... not the inner ones.

I have NPP and am going to remove the mufflers and tips,
and then merely tuck the NPP connections out of the way.

Jake, did your guy cut your tips from the mufflers to remove,
or was he able to remove with tips intact?
I was just thinking that I might offer my NPP mufflers for sale if the tips could
be left intact.
Click to expand...


I know the NPP valves are on the outside tips but if I leave them, could I reduce the noise level at highway cruising by closing the valves eg. eco mode? If I remove the mufflers and just do a pipe to the tips, will the car not be too loud?

I want to make sure I understand what the result will be before I go ahead with any further mods. Removing the mufflers sounds great (no pun intended) just want to make sure to car will not be so loud that I will hate it later on, and is it street legal with no mufflers???
 
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