I actually like the look of TongMan's Z.

I would agree with you about the exhaust leak being bad if you were running HFC's or test pipes. But I believe the people who are doing the washer mod all have stock catalytic converters. All modern catalytic converters (our 370Z is a LEVII-ULEV cars which emit < 1.7 grams of CO/mile) convert carbon monoxide to carbon dioxide so efficiently that it will not kill you while driving if a portion of the fumes were to leak into the car. There have been a significant drop in carbon monoxide suicides from car fumes because of the more efficient cats.

People are not stupid for doing the washer mod on here. Just don't do it with HFC's, and especially not with test pipes.

I think you should talk to the muscle car guys here in my town, not me. They run open headers or long tube headers that dumps right under the drivers seat.
A little thing called atmospheric diffusion is keeping me alive.
Anyways, what's more dangerous. Washer mod or removing your catalytic converters? What if you get rid of your cats and you sit in traffic and the wind carries the exhaust fumes into your car? I'd rather be stuck with the washer mod.

I like how you think! :tiphat:

I've had this mod for over a year and still kickin' haha
I did it purely for sound and modding the car really is the least of my priorities right now.
I gotta finish nursing school :)

So after weeks of looking at/listening to different exhaust clips I decided to see if anyone tried removing the muffler. I knew the forums wouldn't let me down! I was surprised how good it sounded in the videos. So I figured I had a half hour to kill on a Saturday why not try it out for myself...
What started as a stupid thing to do on a boring weekend turned into a mission. I have only had the car for 8 months and 2/4 nuts may as well have been welded in place. Nearly a month later and 2 exhaust nuts cut off I finally got the pipes apart.
I agree with all the naysayers on here that a real catback is the way to go, but for $1500 cheaper this produces a pretty b*tchin sound.
Cold start is very loud and there is absolutely no rasp. No drone either, cruising at 2500 rpm is nearly silent. Driving around is almost reminiscent of a V8 - it's that deep.
If you're bored one weekend and have deep 14mm sockets and a breaker bar handy (may as well hit it with some PB Blaster too) give it a try. Just take my advice and stop if you start stripping the bolts!

Post a video i haven't bought my Greddy yet I'm curious to hear the noise...

Here's a couple of videos:

40th Anniversary 370Z :: IMG_0715.mp4 video by mspecht - Photobucket
40th Anniversary 370Z :: IMG_0703.mp4 video by mspecht - Photobucket

I know this is old thread but it was funny as hell....

It sounds good but it definitely lost power in all ranges. I'd rather be quiet and fast then loud and slow.

Another thing...I'm surprised with all of the Z lovers who no doubt care about detail in all aspects in performance that few people who have done this mention any change in power and responsiveness.

Mine went flat when I put 3 washers in. It had crisp and quick response before so I went to one and it seems to be much better.

I have a stock exhaust and AFE drop ins. Not sure if that make a difference or not. But it makes me wonder if any exhaust on its own really does help power. I write this because opening the exhaust before the muffler reduced back pressure similarly to a cat back I would think and it was amazing how much power it lost.

this is old lol <-- OP