I started my car to day and was looking at the exhaust and noticed that the one of the two tips was not showing any "smoke" or what ever , it’s cold as a** hear in CT. So I covered the side that was and realized that the other side was totally blocked. Any ideas? This is a stock exhaust on a 2000 se with 53k miles. Help???

 

i think the second one opens up when youre at WOT and there is exhaust backpressure

someone correct me if im wrong

 

It's the variable muffler design. At idle the valve is closed to reduce exhaust noise.When you push the car for more power, the vavle opens.

 

Cheap exhaust idea ... figure out a way to get that valve open all the time ;-)

Need some kind of examination scope....

 

lol, i dont htink there is a point to it...but hey if u got nothin else to do i dont see why not

 

But, they use a special heat resistant alloy used in jet engines.

 

its a flapper on a spring that opens under high RPM. This design gives you more torque under at low speed. You don't want to keep it open.

This muffler is better than most aftermarket ones.

 

I like the muffler. The one I had on my 92 SE lasted about 8 years before showing any signs of rusting out. I replaced it with a Greddy. I haven't done any mods on my car yet and not sure if I will at this point. I'll probably wait until the warranty expires before I decide.

 

What??

 

I was talking to TheMax.

 

I had my muffler taken off about 2 months ago to put on a Remus muffler which im still selling if anyone is interested, and then put it back on the stock about a month ago would that cause a problem with this feature?

 

As long as you have the stock muffler back on, you have the valve in the muffler.

 

Stock muffler kicks ***, too bad the tips dont look a little better

Variable-Capacity Muffler
More exhaust flow means more power. And usually more noise, too. Maxima solves this conundrum with a special muffler valve that stays closed at low rpm and only opens as you summon more power to accelerate, pass or climb a grade. The reason this muffler isn't available on just any car? It utilizes a super heat-resistant material (Inconel™) developed for jet engines.

http://www.haasnissan.com/03_maxima_performance.html

 

So for low end torque, you *do* want the increased back pressure,however much it is?

But shortly after you punch the throttle, you'll be pumping a lot of flow through the muffler, and opening the valve. The link from theMax says that the valve is to keep it quiet at low rpm.

I'm just thinking of a ooglie free flow muffler (not so ooglie, really .. I like the sleeper look)

 

You don't really want back pressure.

At low RPMs you are pushing less volume so you need a smaller hole to get out. At larger RPMs, more volume you need a larger pipe. Its all about volumemetric efficiency (sp?). You can have a pipe/muffler that is to large. Pipes flow best when they are full!

If you have a large opening it will make more noise. With the flap you will only have the noise at higher RPMS.

 

im wondering how you managed to pull this off.

this muffler didnt show up on the max till 00 model. (i think)

 

I was only talking about the quality of the stock muffler. I did not intend to imply that my 92 had a variable muffler.