DrunkieTheBear

iTrader: (17)

I would go single for this setup, you'll save weight, probably have a better flow then your current setup, and eliminate any restriction that maybe there.

If you do this with a nice free flowing intake setup (IE 3.25" intake setup) you'll see a huge increase.

I can't preach enough the more air you allow in and out freely makes a big difference, even when still NA, more air + tune for more fuel = more powah

SmokeNismo

So what's it gonna be Deus? yay or nay on the single exhaust?


Also, is anyone planning to fab up a true dual exhaust?

DeusExMaxima

iTrader: (1)

Yay on the single exhaust. Ill prolly have it fabbed up this week. Trying to figure out the best tube diameter and best tip and muffler. Also, trying to figure out the best what to block off the exhaust cut out on the driver's side.

Torgus

iTrader: (10)

go with a 3'' catback anything else just doesn't make sense. especially if you ever dream of going Fi.

drive down to cattman and have him make you one?

DeusExMaxima

iTrader: (1)

I doubt Cattmans exhaust guy would fab me something because he seems very busy. At this stage, Ill prolly get a resonator-back 3" exhaust to the passenger side rear. Not sure of muffler choice at this point. I am going to try to tuck the muffler up as far as I can to minimize that hanging look. Ill also probably black out the muffler for the aforementioned reason.

JRoX85

iTrader: (1)

Deus you goin boost? 3in is far to big for na. 2.5 max, you will loose power even with a nice tune and 3in. Even for turbo cars 3in isn't always the best way

SmokeNismo

wow, you're acting on this faster than I expected. How exactly do you plan to block off the empty space? As far as mufflers go, my favorites are Magnaflows because of decent price, quality, and sound. Unless you wanna go big with Remus. I assume you're going to keep the dual tip design right?

IHAVEA2KMAXIMA

iTrader: (7)

Are you going for the jDm sideway exhaust look too? I vote for the left side Donno why but I like that side better. lol

RHMax

2.5", mandrel bent, as straight as possible. Muffler - HKS Ti, Apexi N1, or Blitz nur-spec. You'll need a big resonator to keep the noise down.

DeusExMaxima

iTrader: (1)

I dont know where to go for mandrel bends here in so cal. I have a resonator already. It shouldnt be any louder than with two mufflers.

RHMax

One larger straight thru muffler might be a tad bit louder. The are shops in El Monte area, or you can get pre-bent pieces. Most shops should have those.

DrunkieTheBear

iTrader: (17)

I've been looking at the flowmaster 60 series muffler. Its more on the real quiet side.

DrunkieTheBear

iTrader: (17)

again going 3" isn't too big NA, especially someone who has as many mods as deus...

Not too mention that its been proven on a 3.5 with little mods to give as much as 15whp.

3" exhaust isn't just for boosted applications, I wish people would stop thinking that.

RHMax

3" exhaust can make power up top, but will lose low/mid for daily driving.

DrunkieTheBear

iTrader: (17)

Merlyn's Max...

he only had a couple bolt-on's (yes a 5.5gen but its the same engine)

then he added the 3" (seems to be gains through out)
http://mdpagi.com/merlyn/dyno.jpg

samtk85

Oh, man that Lexus F... I love the way the exhuast look..... you should try out Deus...

DeusExMaxima

iTrader: (1)

And looking at my dyno sheet I have plenty of midrange. What surprises me about Merlyn's dyno run is that his peak hp is sooner in the rpm range with the 3" than with the other one he had.

Staggered357

if you gonna do a single, i would think centered would look best...



of course there are tons of others around too...

RHMax

What are the mods? What were the conditions? Corrected?

You should do some more research about what size exhaust gives better performance, check muscle car forums too. 2.25 to 2.5 is best for excavating exhaust gas in NA because there's less room for the gas to cool and become heavier and harder to push. It's only one puff at a time, like how headers are designed. That's my $.02.

DeusExMaxima

iTrader: (1)

I love center exhaust too. The problem is the spare tire holder is right in the way. The Lexus IS-F is interesting, but I dont really like "stacked" exhaust pipes, and even if i did, I would have to do some serious bumper mods, unless someone wants to try to photoshop it?

JRoX85

iTrader: (1)

Show me some dyno sheets of an na build w/ 3.5 and 3 in that gained throughout rpm range LOL honestly you may get slightly better power up top but will loose massive amnts of low end and torque Not bashing you or nothing dave just dont see eye to eye I had a sentra with a 3.5 in it and 3in exhaust w/ tune and when I switched back to 2.5 much more responsive and torquey and laid down better power band on dyno at zfever in tampa

po8pimp

be careful on this exhaust subject some people are sensitive...

dineth00i30

hks Ti or N1 muffler for the win!!! Blitz one is too loud maybe a tanabe muffler would be cool too. I'm more into the hks one and it would look hot slanted.

DrunkieTheBear

iTrader: (17)

the bottom line is before the 3" exhaust.

JRoX85

iTrader: (1)

I can tell LOL was that before and after a tune? Also what type of car, engine, mods? If thats your whip congrats on the tune as it is nice and steady. Also see you live in DB I grew up there

RHMax

Peaked early then droped off. Why didn't it keep pulling over 6k?

DeusExMaxima

iTrader: (1)

How bout if I got this?

DeusExMaxima

iTrader: (1)

Here is a rendition with an IS-F exhaust:

DrunkieTheBear

iTrader: (17)

Because there is no SSIM, the SSIM keeps your top end real nice and he only has a rev limit to 6,500

blue line is before, the bottom line and the rest is after the 3" exhaust.

This is not mine...cause 3.0s are better
but thats a 5.5 gen with a 3.5, only intake/header/3" cat and back

RHMax

That's one against a few I've done and seen.

DrunkieTheBear

iTrader: (17)

This is one of those mods that responds well with the VQ. Like the SSIM, spacers, big bore maf and intake stack and others, just to name a few.

As technology advances its becoming more of a reality for a maxima to possibly break 300whp compared to 4 years ago. Its just alot of money involved to do so but I think with time and money someone could do it now.

DeusExMaxima

iTrader: (1)

So do I do 3" or not???? Is it pointless to do it 3" after the resonator?

DrunkieTheBear

iTrader: (17)

do the 3" cat and catback.... and just doing a 3" axle back would be pointless

DeusExMaxima

iTrader: (1)

Dave, the cat is welded to y pipe, so best I could do is catback.

gtr_rider

iTrader: (50)

lol...

RHMax

Larger displacement makes breaking 300WHP possible for an NA Maxima. There may not have been any different in the output with freeflowing 2.5" vs 3" exhaust since the headers and y-pipe are clearly not 3". But I digress...

I say Deus does some more research before committing to a size.

DeusExMaxima

iTrader: (1)

I say ur right. Tadashi believed I needed bigger rear pipes which is why he thinks I was a bit down on power in upper rpms.

DeusExMaxima

iTrader: (1)

Is this proof enough:
http://forums.maxima.org/dyno-discus...44-ft-lbs.html

DrunkieTheBear

iTrader: (17)

yup thats where I've been pulling my information.

This was proof for cattman to start trying to make the 3" exhaust for us as an NA application cause there has been enough proof that it provides gains.

And deus you could cut the cat out, weld in 2.5" exhaust flanges in so that you can unbolt the exhaust if need be. On the otherside of the y-pipe add another 2.5" exhaust flange and weld in a 2.5" to 3" section then from then on back do a 3" exhaust

DeusExMaxima

iTrader: (1)