Mid-muffler removal (04 4cyl)

[Marc04LX]

I know I saw a thead or two where somebody has done this. Is the mid-muffler straight through or not? Any difference from the drivers seat? I know it would be minimal performance wise, but I'd like a little noise.

If the mid-muffler is not deemed to be highly restrictive, maybe changing out the rear muffler would be better.

The stock exhaust appears to be 2'" throughout. Can anybody confirm this? :dunno:

[turBeau]

Sup Marc. The stock exhaust is roughly 1.75". IMO it is too small for these engines. I upgraded mine from the cat back to 2.25". I've got an aftermarket no name muffler on it now, but will be replacing it w/ an OEM 06 Si muffler.

Before all that, I had a 2.25" "mid-pipe" you could call it. It was from the cat back, but stopped right before it made the upward turn to head for the muffler. I noticed absolutely no change in sound w/ that done.

[Marc04LX]

Thanks for the reply Beau. I guess I'll wait until I can justify a complete cat-back.

I got a wing coming and tints are soon, but I wanna do the 17mm rear bar before a new exhaust system potentionally gets in the way.

I gotta get away from this board before I end up in the poor house! :paranoid:

[turBeau]

Too late, you've already been victimized.:) You are getting an OEM wing or similar, right?

[SatinSilver]

Sup Marc. The stock exhaust is roughly 1.75". IMO it is too small for these engines. I upgraded mine from the cat back to 2.25". I've got an aftermarket no name muffler on it now, but will be replacing it w/ an OEM 06 Si muffler.

Before all that, I had a 2.25" "mid-pipe" you could call it. It was from the cat back, but stopped right before it made the upward turn to head for the muffler. I noticed absolutely no change in sound w/ that done.

Were you happy with the increase in power or was it not very noticeable? Just wondering if it's worth the change or not.

[Marc04LX]

Yeah Beau, I'm getting a new OEM pre-painted wing (w/led brake lights) from a reputable ebayer for $199. I was really liking the spoiler but I read that a batch had fitment issues and getting that red light out of my back window is a plus. It kinda glares up on the glass. I didn't want to tint around it and I didn't want to potentionally get hassled about obstructing it either.

I'm looking forward to the new Si muffler update. What did you have to give for it? I'm considering a 2 1/4" glasspack/super turbo combination with a turndown. I'm hesitant to cut on the bumper.

[turBeau]

I'm looking forward to the new Si muffler update. What did you have to give for it? I'm considering a 2 1/4" glasspack/super turbo combination with a turndown. I'm hesitant to cut on the bumper.

I paid 100 bucks shipping included. Its the axle back portion w/ only 6k on it.

Matter of fact, my muffler now is a super turbo 2 baffle design w/ a 12" resonator, and its still bothers me. Its quiet @ idle... and thats it. Cruising @ 70 is alright but it has a drone to it. The stock muffler is a 3 baffle design and I'm hoping the Si one is quieter than what I have now. The Si is the same muffler they use on the S2000's.