G37X GraSdadow

iTrader: (1)

Hi I have quick question about muffler delete on G37 sedan before I delete it this Saturday.

1) Is there a gasket or bolt connection where the muffler comes off? or do I have to cut if off?

2) If I undo the muffler delete for a reason(like too loud/warranty issue) do you think the dealership would notice that I had muffler delete?

Thanks !

VQXauvas

iTrader: (1)

There are just clamps holding the mufflers on, just unbolt, drop the mufflers and enjoy. completely reversible if you don't like it and the stealership will never know unless you weld pipes in their place.

qmantran

What do you mean the dealership will never know?

1. The exhaust tips are clearly missing
2. The car is obviously louder at start up and throttle

Flakman

I believe he means if they are bolt on they can be removed, then replaced if he needs to take it in.

qmantran

Oh lol that makes more sense the mufflers aRe indeed bolt on however the exhaust tips are welded to the mufflers.

I unclamped and removed both mufflers last week and they are still off the car. It sounds very good for a free mod, however from outside the car there is a slight metal rattling noise. Can't be heard inside the car so that's a good thing.

I just don't like looking like a acura with missing exhaust tips now.

I also get this whistling noise near 6700 rpm to redline with the mufflers removed. Sounds like turbo spooling

G37X GraSdadow

iTrader: (1)

Hmm.. I am planning to use megaflow pipe and keep the exhaust tips. Please correct me if I'm wrong.

1) unbolt the muffler out of the car
2) unweld(?) the exhaust tips from the muffler(?)
3) weld the tips with the pipes.. (??)
4) weld(?) or bolt(?) the pipes to the car (?)

Sorry for a noobie question..

JohnnyD

iTrader: (1)

Why are the exhaust shops around here telling me the mufflers have to be cut off and a new pipe welded in? I thought I could unbolt the mufflers and have a pipe bolted back. I don't want to cut/weld anything, so I can easily return to stock if I choose to.

Peepz

iTrader: (1)

If you wanna keep the stock tips then yea they have to cut and weld a pipe. That's how they did it for mine.

JohnnyD

iTrader: (1)

Excluding the tips, does the pipe have to be welded to the rest of the exhaust? That is my worry, I'm fine with welding some aftermarket tips to the end of the pipes.

Splitpi

I bought my G37 with the muffler delete. I cannot stand it. To much drone. Unfortunately, the previous owner welded the new tips to the exhaust. So I will have to replace from the Y-pipe back.

I mean the car does sound good, but I am too old to enjoy the droning sound.

qmantran

I don't believe you only have a muffler delete.

I removed the rear mufflers on my 2011 G37S Sedan automatic and there is no drone at all.

While cruising at any speed including 80 mph the car sounds completely stock like I never removed the mufflers. There's no exhaust humming or drone at all.

I am very familiar with drone. My last car had 0 cats and a full exhaust. The exhaust had mufflers and a resonator built in, however the car still droned horribly especially on the highway.

I replaced the resonator for a 6" diameter one and it reduced 75% of the drone but it was slightly still there.

My G37S with the rear mufflers removed has absolutely no drone...

gmanny86

I took off my muffler(unbolted) this past weekend to see how it would sound and I really like it! It roars when you floor and it's pretty quiet under 3k rpms. I wanted to finish this "mod" before Saturday and I'm planning on taking it to a shop to get it done. I am going to tell them to put in new piping and to weld new tips on them as well. My friend said that I can tell them to weld on a flange so that I can unbolt when I want to put back the muffler(in case I want to sell it or I get annoyed of the loudness). Hope this helps out a little bit. Shouldn't cost more than $150, hopefully.

botlfed98

iTrader: (11)

I'll sell you these for $200 if you are interested, that way you can keep your stock mufflers if you ever want to go back...

Splitpi

That is a bad assumption.







Like I said, its my opinion and I don't like the noise. It makes my hands free phone usage mostly useless due to the noise and vibration the exhaust creates within the cabin around the 2 - 3K rpm range.

You have a different opinion. But my opinion on my car is that I will be replacing the exhaust system.

gmanny86

Thanks for the offer but I went to get a quote after work today and for $200 I'm going to get the 2 flanges piping and 2 stainless steel tips. Hopefully it turns out nice for the price I'm paying.