I have a 2002 SE 6 speed maxima. I have just installed a Steve Millen intake and I am very happy with the sound and the performance. I am now looking at adding a catback system. However, after reading the literature that came with my Maxima,I learned that the 2002 Maxima has a new muffler that closes a valve when accelerating normally, but opens up the valve when wide open. With this feature will a new muffler and catback exhaust really be much of an improvement. Help!

 

I added a RT cat and a cat-back exhaust. I did a before and after dyno, I got a 9.7 FWHP gain and 11 FWTQ gain. I think 90% of those gains can be contributed to the greddy exhaust.

 

Use the search function, Bill. Search under "muffler" in the 5th Gen forum and you'll find enough threads to choke a horse.

BTW, a complete catback system is worth ~5 HP.

 

More then that on a 2002.

 

Agreed. But not much more. Maybe ~7 HP instead of ~5 HP. But do a cost per horsepower comparison between a pre-fab catback system and a Y-pipe or an intake and the game is over. A pre-fab catback is simply the LEAST efficient mod you can make from a dollar per hp perspective. That's why it doesn't make sense to purchase a pre-fab catback in my estimation. Unless money is no object, you're much better off having one custom made.

 

Can we please use the search feature, or just scroll down the posts... we already have this thread going !

 

Kind of like p!ssing into an oncoming wind, isn't it?