We are only 1 order away from initiating production of a 3" catback exhaust for the 00-03 Maxima (and 00-04 I35). If interested, please give us a call at 800.759.9920 (9-5 MST, M-F).

Brian C Catts
Cattman Performance

So, what's the final verdict everyone agree that 3" piping makes more power than 2.5" on NA VQ35s?

Thats what the dyno shows.

Look at the runfiles, that answers your question.

i think everyone knew that the 3" exhaust made more power than the 2.5", the thing everybody wonders is how much more power over the 2.5" and is it worth the extra $$$

I have a custom full 3" exhaust and I dont have any numbers yet but on the street this thing is a beast, with spray its really strong...

my only mods are Full SSIM w/port matched lowers TB & Elbow w/spacers
255walbro
Utec on 350z map
100 shot

stock headers, intake, internals....

dont know what the 01' cobra runs in the quarter but I got him from a dig by four cars the other night...
the guy has some bolt ons...

any sound clips???

I'll make sure to get you guys soundclips of a GenIII header/y-pipe/test-pipe/3" cattman catback here in about a month guys.

Why are you asking here? This thread is not about 3" exhausts, it's about dyno numbers.

There's a thread about it in the 5th gen subforum, look there.

just wondering, did you lose alot of power down low?

Have you not looked at the dyno runs? They'll tell you all you need to know...

i havent seen his before 3" exhaust so i wouldnt know.

The '07 runs are 2.5", '08 runs are 3". Did you look at any of the runs?

Hell, did you read the thread? First page: http://forums.maxima.org/6241702-post29.html

Sure, it doesn't state specifically that it's 2.5" vs 3". However if we use our reading skills, we go down to this post: http://forums.maxima.org/6249548-post33.html

To which we find the answer directly following: http://forums.maxima.org/6249980-post34.html

What I'm saying is, if you actually read the thread, you won't have to ask questions that have already been well explained.

yes but i never asked that kinda of question. the reason i ask this is because everyone over on the altima forum seems to think adding 3" wont do much and you'll lose power down low, but from the looks of it you wont.

Well I guess it's up to you to believe the guesses of random people on the internet, or multiple dyno runfiles that show fact

i believe it, just trying to get the other altimas to believe lol. sorry for the questions.