Your exhaust is sliding thru the hangar bushing(it's worn)...you can add another small piece of hose or a shock bushing to keep that bushing peg from sliding thru the worn out hangar banging against your under carriage.

Catback for me wouldn't be only a few hp considering I have no back pressure at all right now. On top of that I already have full bolt ons haha, and the 3" catback by cattman is going to give me some good hp Time to saveee

It's not just about going cheap though, It's about sound and drone quality to me as well. Megan is awesome but no ones selling otherwise I woulda gone with that. I was considering getting cattmans 2.5" off a member but I figure that's going to give minimal gain, might as well save a little more and get the 3" which really gives some numbers.

i never understood that back pressure thing giving more power........ if so was the case wouldnt a 2.5 exhaust offer more power due to more back pressure??? i wouldnt mind buying a cattman 2.5 but the people who sells em is selling em for dang near the price of a new one

I understand it and feel it as straight pipes on a non built motor=not enough back pressure. It's mainly throttle response for me I guess. My car just runs tons better with a good amount of back pressure that fits the motor. It's like blowing through a straw, too much air vs too little air. You blowing through a 1" in diameter straw will go further than you blowing througha 3" in diameter straw unless you can allow stronger air flow for the 3"... If that made any sense..

Long story short if the 3" allows 15+-whp gains (which i'm trying to understand considering a n/a) i'm on board. Especially like you said grand about the pricing, i'd rather get the 3". Or fabricate my own which looks like it's going to be the way it's gonna go unless cattmans next line is in over a month.

i can understand the straw theory but the reason why i would disagree is because the main objective isnt to shoot something out the exhaust to a furthur distance moreso having a free flow from the motor without too much of an exhaust width to mess up the flow of exhaust gas... so with that said i can see how the 3" exhaust would produce more gains than the 2.5" as far as throttle response i guess is cant speak on that seeing as though i dont own a car with a 3" exhaust but our cars were already so responsive, i cant see how the exhaust would ruin that so much but provide gains... doesnt seem to bug Jaypee99's 5.5 at all (guy with the prototype 3")

Backpressure is a myth and what you're saying makes no sense.

http://www.uucmotorwerks.com/html_pr...torquemyth.htm

I've tried to post that... lol Most just disregard it and get back to their backpressure talk.

Alright thats its not too bad, but also the megan catback moves a little. Midas said it was normal

What subliminal is saying does not make any sense.

Yea the way u get more hp off exhaust is by eliminating the pressure, letting the gases flow much easier, if their was backpressure it would make the engine work harder decreasing hp.

If you buy a 3" cat-back you'll be expelling exhaust gases as quickly as possible (for what's available)

If you buy a 2.5" cat-back you'll be expelling exhaust gases somewhat quickly.

Backpressure is like sticking a tennis ball in your exhaust.

So actually what you wanna do is just jam a tennis ball in your pipe and then you will have maximum low-end torque available to you.

It's not all about WOT. None of us are on our cars all the time, at normal cruising the drone of a 3" on top of the what i assume will be delayed throttle response and bit of lag will get very annoying+ the low end loss, quickly. Anyways back on track, this wasn't about the 3", it's about megan vs cattmans catback. And yes, MY CAR is not running like it should be without a proper catback. Throttle response is delayed, and I feel like I've lost power.

I see both sides of it, I just personally don't think I will be going towards the 3" unless I decide to go f.i or built n/a.. All i'm saying. Moncef let me re-address my statement. You do not NEED back pressure but for low end and mid range throttle response and power, it would be very helpful.

If it's about Megan vs. Cattman well Megan is gonna be a lot louder. The resonator isn't designed like Cattman's. And you said you "might as well" go with the 3" if you were gonna gain some horsepower.

I'm not on my car all the time but I have zero torque issues with headers + exhaust and I'm even running a short ram intake (easily heat soaked) on a DEK

Readdress my statement. Backpressure is a myth. If you're sick of loud cars just put a stock cat-back on and you can have all the "backpressure" you want. If you really think you're having some power loss, check your codes if your SES is on.

A good example would be for you to switch back to your stock intake, you'll see how much smoother you car pulls, that's the difference in the larger diameter exhaust than the 2.5 which imo is perfect for a non built n/a maxima.


It's no myth that with a 3" you will more than likely lose the mid range/low end tq. It'd be awesome if you'd also open up your mind of thought and quit thinking your word is the final word and the correctt one. I'm done debating with a wall.

There is no such thing as backpressure, no change in low end or mid range tq or power loss or throttle response time in switching exhaust sizes. Happy?

There is no mid range lose on a MAXIMA with the 3"... can't speak for cars in general...

Well every car is different, every motor and compression is. For the case of a maxima I'm in no case bias, If you show me proof i will accept it. Not gonna fight a war where I know i'm wrong. I'm saying for the majority of cars such an upgrade would only resolve in things like loss in throttle response and until I actually get some feedback from someone with the actual exhaust, I'm going to be skeptical. but that's just ME. If someone else feels different by all means go ahead and buy one, the threads right above us. I also want one however i'm still skeptical on it.
That's just me. MY opinion and feeling. thanks for the info guys.
I Might end up going with megan and just upgrading to a larger res.

this should be stickied, great info here

At first I was kinda skeptical but the gains is there... merlyn was the first to post the gains seeing he was the first with the cattman 3" should be on youtube... he got rid of his maxima and sold the exhaust to jaypee99 who had similar gains so there is more than one people who proved such gains (both guys from MD, I don't know merlyn but I do know Jaypee99 and was there for the dyno)

This may be off topic for the current convo but, this is one of the best sounding exhaust I have ever heard on a car and one of the reasons for my purchase.

http://www.youtube.com/watch?v=K3uuwBKw6Os

If you have backpressure u lose hp, and tq. Its a simple concept, thats why performance exhaust is so much better because it creates little backpressure.Show me some evidence that backpressure helps ur car.

Actually that is on topic... and sounds pretty good..

LMAO was the last part taken in the trunk???

There is talk about having your valves burn and rot away but that's not my concern, ffs people my concerns just god damn low end throttle respone and tq"?!?! WTF seriously. Get off my nuts unless you own a damn 3" exhaust SERIOUSLY STFU.

Sorry to seem like a douche but god dang.

I bought a Megan Racing Turbo N1 muffler and had a shop fabricate me a 2.5" exhaust for $220 out the door. So with the cost of the muffler I was looking at $350 for everything, installed. Heres a sound clip.....

http://www.youtube.com/watch?v=MzToN5mlFpM

http://www.youtube.com/watch?v=MzToN5mlFpM

LOVE IT

thanks for the vids,..

OT: 2003maxipadse- but you should look into the gains of a SRI over a CAI on this car,.. injen= in terms of performance on a maxima..

Idk....i think i love the sound too much :/ plus I got the intake for $85 brand spankin new shipped to my house...so i had to. What is the hp difference between the two..roughly

Once you get headers your sound goes right out the door lol. Takes a hfc or a good res to get a nice sounding setup again.
imo..

the way the injen sits is directly behind the radiator,..so in the summer when that puppy is a couple hundread degrees.. it really gets heat soaked..its also said that the injen loses top end compared to the gains top end on the SR...search around on here.. theres alot of stuff.. ther is also a way to make the injen relocate into the fender by drilling a hole..and 90* turning the battery which a few membners have done..with picture by picture write ups.. from what i remember.,. you can find the how to on NYCMAXIMAS.org.. g/l..
EDIT: here.. found it 4 u.. u need to sign up to c it though.. http://forums.nycmaximas.org/showthread.php?t=25714

I literally JUST picked up my car from the shop bc I got the Cattman Y pipe installed....................MY TONE IS GONE!!! ugh....idk bout this one. Not gonna lie its a great power increase but eek..it sounds alot deeper and a little raspy. :/

Good luck trying to find a MEGAN. I searched for a full day a few weeks ago. I was told anywhere from 1.5 months to 4 months backorder. YIKES!

man, you have quite the choice in performance mods
Homemade intake > Injen
Headers > Ypipe... you probebly just added 20whp with I/Y/E when you couldve yeild 20whp with just headers... i guess if thats what you like though... i believe you sr. have spent the most for minimal gains

Well... Yeah that's what happens. After my headers+y I lost the deap throaty sound I loved to a annoying rasp. Had two resonators put on and it's TONS better. However only thing missing now to get me to that awesome sound is a fast cat....... Yeah, People say "I'll get over the sound for the performance" till they actually hear an non resonated headers+y combo.........

I doubt 20..... That means if he gets headers 1+1=2.. Which would mean he'd yeild 40whp with i/h/y/e? I get what you mean though.

I'd assume maybe 10. Intake won't do much w.o a good tune. And 2.5" exhaust is a good step up but definitely arguable. However to fully put that i/h/y/e to it's full potential you need a tune.

Have you got one g-hustle? If so what are you running to tune it with?
I'm starting to pull towards the vafc-2/

I agree with the sound vs performance comment.. I gotta say I dont care for the raspy sound I got but WOW do I love the performance gains. Real question is...was it worth it? Next step for me is going to be tuning...and im not sure what to go with either..Apexi Neo with a few hrs of dyno tuning?..

With obx, intake and 2.5" catback I'm going with the vafc-2.