Has anyone ever cut open the stock mufflers and removed any insulation, then welded them closed?

I'm looking for tanabe axle back level noise with no drone and from the mild reports about the tanabe, I thought this might work.

 

Remove the mufflers and have straight pipes welded in.

 

Did that on my '08, looking for something a little more subtle this time around.

I did this on my corvette and want to do something similar if possible

Decided to do the muffler mod on my Z06 (pics and video inside) - Corvette Forum

Just need to know what the inside of the muffler looks like if anyone has cut it open.

 

I've done it.
Inside of the mufflers look like this: (Although hopefully less rusted. mufflers purchased from a flooded G)

 

Did you leave the pipes alone and just remove the fiberglass packing? From the looks of that picture it looks like options for modifying the muffler may be limited.

 

What does it sound like? Rasp bag? or just slightly louder?

 

Damn, is that after you peeled off the starfish & barnacles

 

There isn't any fiberglass packing. I just removed the two walls you can see and left the pipes alone.

It was maybe a tiny bit louder than stock. But really difficult to notice the difference. I ended up doing the muffler delete but now i feel it can be too loud. I'm just difficult to please i guess

That's the muffler as soon as i got the shell off. Unmodified

 

Just get some resonators welded on with the straight pipes.

 

^have you done this?

That youtube clip of the G sedan with muffler delete sounds AMAZING, better than any clips with a/m exhaust systems.

Is there any downside to removing the mufflers, aside from possibly attracting unwanted attention?

 

STownSaint

Usually with mufflers removed you'll experience drone. I get a bit of drone at a little over 3k rpms which doesn't bother me as long as there is no drone on the highway. Plus the only time my car sees 3k+ rpms is when i want it to scream

Also, no mufflers means less back pressure which results in some low end power loss. I didn't notice any loss of low end power after removing my mufflers, but that's only according to my butt dyno.

 

Limited, not sure where you are from but here the highway speed limit is 75, and most people drive 80+. At that speed a 6MT is turning well over 3K.

 

I'm in WA. Highway speeds up near Seattle are 60mph. Most people drive around 65-70, plus i have a 7AT so i'm sure it's different than the 6MT.

Also there isn't any drone at over 3k rpms for me. It's just right at about 3,000-3,300 rpms. Anywhere past it sounds fantastic!

 

It's true that cruising at 75-85mph, I'm hovering around 3-3.5k rpm in 6th gear. Hmm, still far from modifying exhaust, but duly noted, Thanks sir

 

I actually just got back from a road trip to Canada and was cruising at about 80-85. Happy to say that there wasn't any drone at all near 3k rpms on the freeway. I even downshifted to 6th gear to get the rpms up a bit and it was fine. Although when i got under 2k rpms it did drone just a tad bit.

Conclusion from my muffler delete:
Some drone at about 3kish rpms city driving.
Only drones at under 2k rpms freeway.

Hope this helps more than my previous post.