I'ma do it, but I'd thought I'd ask first (yes I'm serious)

[DHM85]

I'm going to drill a hole or more in my exhaust. I don't wanna hear the "don't go cheap and just buy a real exhaust" speech, I'm not going to. I'm more than happy with my 250ish HP and don't really plan on going more so an exhaust setup isn't needed and I really just want a slight noise increase.

WITH THAT BEING SAID

If one was to drill a hole or two or fifty, would one want to start drilling in the exhaust itself before the mufflers or drill into the mufflers itself?

Thank you all for the non judgemental opinions.

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[Doc_Mello]

Given the muffs ‘muffle’ sound, probably best to drill a hole in the piping right before it. Something to consider is that you may also be decreasing structural rigidity itself by modifying the piping. You might be introducing a weak spot that can lead to failure in the future. Also, if you plan on someday selling the vehicle, a hole in exhaust is highly problematic for resale.

 

[DHM85]

Given the muffs ‘muffle’ sound, probably best to drill a hole in the piping right before it. Something to consider is that you may also be decreasing structural rigidity itself by modifying the piping. You might be introducing a weak spot that can lead to failure in the future. Also, if you plan on someday selling the vehicle, a hole in exhaust is highly problematic for resale.

Maybe it'll completely fuck up the back end and it'll rust over causing me to get a sport muffler at that point. Been looking at the vibrant 1040 anyway cuz I don't want anything loud but in all honesty I want just slightly more noise. The car is paid off and has 40k miles and I have no intentions to sell.

I appreciate the input.

 

[toastyJ]

I saw a vid of an Si with a vibrant resonator/muffler on YouTube. Easily the best sounding Si I've heard and it wasn't even close.

 

[arpypat]

Do you already have an aftermarket downpipe? Not the cheapest option, but a catted DP sounds pretty damn good paired with an otherwise stock catback.

 

[shoegazer]

If I were going to do this; I'd get a diagram of the actual chambers inside the thing. Lots of designs have a system where there is one chamber going one way and another identical one; but about 180 degrees 'out of phase' so as to cancel out noise.

So maybe you alter both the same way to get the same sound; just louder?

And I'd drill in the center and away from any welds or crimps.

 

[Shankmeyster]

So you want to let exhaust gases go where they aren't meant to? Good idea. Prepare for more corrosion and smelling that exhaust flowing into your car through the windows and the vents at stops. Drilling into your exhaust isn't going to make it sound better. Do a resonator delete if you want more sound.

 

[DHM85]

I saw a vid of an Si with a vibrant resonator/muffler on YouTube. Easily the best sounding Si I've heard and it wasn't even close.

I've seen videos on YT with the vibrant muffler and it does sound good. But I'm PCS'ing soon and just want a bit more. Not a lot and I don't want to spend the cash yet for it, but just something for now.

 

[DHM85]

Do you already have an aftermarket downpipe? Not the cheapest option, but a catted DP sounds pretty damn good paired with an otherwise stock catback.

I should have bought when they were less expensive but still on the fence on that one. I'm content with what I have now and don't want to spend that kind of cash just for the sound. As stated on another comment I'm PCS'ing soon and we'll see what I do with this car when I get to the new location.

 

[DHM85]

If I were going to do this; I'd get a diagram of the actual chambers inside the thing. Lots of designs have a system where there is one chamber going one way and another identical one; but about 180 degrees 'out of phase' so as to cancel out noise.

So maybe you alter both the same way to get the same sound; just louder?

And I'd drill in the center and away from any welds or crimps.

Solid advice. I'll look into that for sure.

 

[DHM85]

So you want to let exhaust gases go where they aren't meant to? Good idea. Prepare for more corrosion and smelling that exhaust flowing into your car through the windows and the vents at stops. Drilling into your exhaust isn't going to make it sound better. Do a resonator delete if you want more sound.

I could give a shit where the gases go but I was planning on drilling past the Y piping towards the back pointing to the rear. As far as sounding better that's not the goal. I want an increase in sound volume through 1, 2, 3, maybe 100 holes in the rear piping just before the mufflers.

 

[jtrader]

This was my first exhaust mod on my Sport Hatch. Start small, then gradually increase in size until happy. The hole I had (below) was perfect for my taste, but then I deleted my resonator and it became a bit too loud, so I had a shop weld it closed again. Now I just run a res delete and I'm happy. Good luck.

 

[DHM85]

This was my first exhaust mod on my Sport Hatch. Start small, then gradually increase in size until happy. The hole I had (below) was perfect for my taste, but then I deleted my resonator and it became a bit too loud, so I had a shop weld it closed again. Now I just run a res delete and I'm happy. Good luck.

Just did 6 holes. 3 on each side after that "Y" shaped pipe. Figured it would give it just enough to pass through on each side instead of all coming out the middle. I got exactly what I wanted, a little more noise and no money spent. I can hear the cracks and pops a little louder as well and nothing obnoxious. It's literally stock sound (which I didn't mind) only more audible. Now let's see if I ever decide to get a DP, wonder how it would sound then.

Thanks y'all

 

[DHM85]

Aaaaaaand 1 more in the middle for good measure and holy cunt knuckle batman that made a great difference. Throaty which I wasn't expecting yet still not obnoxious. Noticably louder yes but not so loud that my wife is gonna complain

 

[SmokeGhost]

Good lawd so much youth in here.

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