Would it be beneficial have one? I'm considering putting on the 5th gen muffler. Other than cutting the bumper to fit the dual tips I understand that the piping has to be cut to fit the b pipe and a new flange welded on.

 

It probably is beneficial, but I haven't seen any comparison between the 4th gen and 5th gen mufflers. The 4th gen muffler is pretty restrictive. For instance, I measured 17 psi of backpressure at 11 psi boost with my oem muffler, and only 10 psi with an Apexi WS muffler.

 

i heard that the 5th gen muffler has a dual chamber to decrease backpressure.

there is a cutaway picture somewhere out there. i remember seeing it in Nissan's promotional material.

 

For NA application the 2k muffler would be fine. But for Boosted apps, I don't think it would flow pretty well. I belive the exhaust tips are like .94", so they wouldn't flow very well under boost.

 

Mr. Yamato sig. I understand the want for a quiet free flowing muffler for your sc max. But the inlet of the y2k muffler is only about 2.25 or so. I don't know if the outlet size really matters more/less than the inlet size. I have a Y2k on my na maxima. I love it. It's super quiet. It's design IS supposed to give quiet sounds at the low rpm range and good flow at the higher rpm range. (ie.. flapper that opens). But I don't know if these will help a sc max. Or I should say "I don't how much it will HURT your performance over what you have now".

I've seen more than one post about guys getting some pretty good hp increases by upping the catback pipes over 2.5"(sc maximas). So I'll say that the Y2k muffler won't really net you much. But as said above, it might not HURT you that much over what you already have. Unless your current exhaust pipes are 2.5" or larger.

 

your sig is to big, fix it

 

http://forums.maxima.org/showthread....hlight=5th+gen

NA, but expect similar results over an aftermarket muffler

 

Yes Mr. Jeff Glad to see you know where I got the sig!
I'm at 2.5" right up to the point where the b pipe meets the stock 2.25" muffler pipe. I do notice the power difference everytime I put on my straight-through muffler but the experience only lasts for a week and I put the stock muffler back on before my ears bled. When I had the stock b pipe I couldn't feel the power difference but I sure did get the extra sound effect.
After reading about the baffle within the 5th gen muffler I thought that it would benefit the SC breathing at higher speeds.

 

Well I think you could get a shop to put an hydraulic expander on the opening to get it to 2.5". For how cheap these mufflers are now, it might be worth a try. It WILL be quiet. I pretty sure you will like the sound. But performance-wise, I don't know. Should be better than a stock 4-gen muffler. But don't know if it's better than those loud straight though types.

 

restricting the very end of your exhaust would not be a good idea with a boosted application. But I guess you could hook up a electric cut off to reduce noise when you want to

 

larry. I don't know what would be worse though. For one he already has a small 2.5" catback. I would think if you have to restrict one side, the end would be better?

 

I guess so, but its still hard to say. I guess it would also be dependent on the amount of boost blackcat is running.

Isn't the stock manifolds like 2.25 inch in diameter and the only part that becomes 2.5inch on a y-pipe is after the pipes converge? In that sense there is already a restriction at the beginning and now with the 5th gen muffler there will be another at the end.

 

Black cat just get a RS*R EX mag muffler, with two resonators, and your exhaust should be pretty damn quiet.

 

I am running the 2k muffler right now and i deffinetly noticed a power loss in upper rpm's. I switched from a straight through muffler becasue the sound was really starting to get to me. To me the 5th gen muffler sounds incredible when at WOT, but again you do loose some top end. To solve that problem i am going with the ATP boost actuated cuttout. That ought to be free flowing enough . I say if your not out to muster every last pony out of your car then go with the 5th gen muffler. Hope this helps with your decision Blackcat

 

stock pulley it should be okay, on top end it will kill you because of the bad flow. Personally if your ears bleed Id get a cut out so it opens up after 5 PSI. I am definitely thinking of going that route.

Jaime

 

Yes. But each 2.25" manifold is only handling 3 cylinders.

 

ah, i see. It would be worth it to have a litte loss on the top end for a overall quiet drive

 

Sounds like you liked chris'max VES boost activated cutout?

 

I have a dyno on my se-r comparing an open 3in cutout before the muffler vs running through a 2000 max muffler. Now my car is NA with bolt ons, here is the dyno. The first run is with the cutout capped and the last 2 are with it open.

 

No hot linking Ari

 

Try this link and see if it shows
dyno