[beemer105]

This is something I have been looking at doing once I have some spare time!

My thoughts were weld closed several of the small perforated holes, along with cutting and blocking off the far left/right section of the muffler. Still retains NPP function albeit with increased sound hopefully.

[SJFGTO]

Originally Posted by beemer105

This is something I have been looking at doing once I have some spare time!

My thoughts were weld closed several of the small perforated holes, along with cutting and blocking off the far left/right section of the muffler. Still retains NPP function albeit with increased sound hopefully.

Beware the law of unintended consequences...

[Gunkk]

+1 avoid mods to the stock suitcase.

Another +1 for the recommendation on a secondary cat delete for low-budget sound increase w/o a muffler delete.

Or drop the coin on a Borla catback or axleback.

[FoundNemo]

Secondary cat delete is known to cause low end torque loss due to false knock from resonance in the pipes. If you go this route, I would recommend adding some small resonators to tame that risk in place of the cats if you choose to do it.

[SouthFloridaGTO]

Originally Posted by Laststandard

NPP exhaust cutaway. Really nothing to mod inside the case. I wouldn't attempt to replace the perforated section with a solid pipe, if you do that and happen to hook the NPP system back up bad things will happen.

Secondary cat delete will get a bit of extra sound.

What is the inner exhaust tip connected to? Is it just for looks?
Edit: i think i see now. Thats is where the exhaust that comes out of the perforated pipe exits the opposite side

[Checkmate1]

Anyone do this yet?

[ZRacerLE]

Originally Posted by Checkmate1

Anyone do this?

I want to retain the stock exhaust box but curious if any muffler shops have done any wizardry with this box.

No muffler delete as I know drone is a huge issue with muffler deletes from owners.

C6Z muffler mod was awesome

[DFW_Muscle]

Originally Posted by JasonSB

You want more sound then get headers. Headers and stock exhaust sound like ass. I added resonators right behind the stock suitcase which deleted the crushed section of the stock exhaust and it sounds good now. Im going to replace the stock tips with 4 inch black tips.

So it went from sounding like ass (headers + stock muffler) to sounding good (headers + resonators + stock muffler)?

What resonators did you use? Any pictures, more details?

[URBAN LEGEND]

Originally Posted by Laststandard

NPP exhaust cutaway. Really nothing to mod inside the case. I wouldn't attempt to replace the perforated section with a solid pipe, if you do that and happen to hook the NPP system back up bad things will happen.

Secondary cat delete will get a bit of extra sound.

That thing looks like the back seat.