Internal exhaust mod

[Terryg]

Am I missing something, why cut into the box, why not drill straight through? It's not like you could miss the pipe internally.

[particlewave]

Originally Posted by Terryg

Am I missing something, why cut into the box, why not drill straight through? It's not like you could miss the pipe internally.

Either way, you'll have a hole that needs a plate welded on. Cutting a larger hole would certainly make the work a bit easier.

You're not going to drill through the body and pipe in one pass, anyway. You have to drill or cut a large hole through the body, then center punch the pipe so the drill bit doesn't just slip off of it.

[tommy583]

Would it make sense to make the cutout on the bottom of the muffler and only make a hole on the bottom side of the inlet pipe? I ask because the outlet is below the inlet pipe. So if you only made a hole on the bottom near the outlet, it would seem more sound would make it to the outlet. Maybe it doesn't matter either, not sure about it. What do you guys think? To be clear, blue line on left side is inlet and the red line below it is the outlet to the tip on the left side.

[particlewave]

Originally Posted by tommy583

Would it make sense to make the cutout on the bottom of the muffler and only make a hole on the bottom side of the inlet pipe? I ask because the outlet is below the inlet pipe. So if you only made a hole on the bottom near the outlet, it would seem more sound would make it to the outlet. Maybe it doesn't matter either, not sure about it. What do you guys think? To be clear, blue line on left side is inlet and the red line below it is the outlet to the tip on the left side.

I really don't think it would matter. I went clean through the inlet, so there are holes on top and bottom, anyway.
The benefit of doing it from the top is that it looks 100% stock since the welded on plates are hidden up top.

Side note: I went through a short tunnel the other day...holy balls! It's sounds beastly!
I'm going to have someone do a video of a drive by soon.

[fridsten]

Originally Posted by Terryg

Am I missing something, why cut into the box, why not drill straight through? It's not like you could miss the pipe internally.

It was only because I wanted the muffler to look completely stock from the outside.

[Jgkram]

Guys, is the internal modification ANY different in sound then adding the external pipes like others have done? I too do not like the look of added pipes welded on and prefer the stock look but I can't help but think by diverting some of the exhaust prior to entering the muffler you would get a slightly beefier sound using external pipes. Otherwise why would places like Fister or even Pedro's Exhaust not use the easier route just to drill out the pipe.

Thoughts?