I am looking for some OBX Headers for 02'-03' Max, I'd prefer if they weren't beat up.

 

OBX is thumbs down... I just had a friend install some, and couldn't even tell a difference in performance after install just some more sound and rasp. From your mod list it seems as tho you have good taste in modifications and you shouldn't ruin a sweet ride with "headers". The stock system is so much better, just restrictive. I've got a spare set of exhaust manifolds and cats which can be gutted and ported for you, and will yield so much better result than long tube headers, with an even power range. Long tube headers just shift the power curve to the right, while a ported and polished stock exhaust setup will bump the entire power curve up. If you're interested, shoot me a PM. You also need to revamp your intake setup. I'm just throwing a custom built intake system up for sale in a few minutes, you should check it out.

My max is a daily driving machine, with a 0-60 in under 5 seconds. I haven't been dyno'd because they are pointless and just #s to flaunt. In timed trials my car has dropped .4s off 0-60 with my "stock header" setup, and .3s off 0-60 with my custom intake setup. If you want to be show, get headers. If you want to be go, lets talk.

Here is the setup with both "stock header" and custom intake:

 

first, there are no longtubes on a fwd v6. obx and cattman are just plain short. stock ones are super shorties. so both current designs bump power all around. and no, long tubes shift power to the left, you only need to google long tube vs shorty headers to find that out. keeping stock headers while removing precats is good for a budget and will give you gains but the v2's and cattmans will do that and more by having individual runners for each cylinder as opposed to log style manifold and larger piping for the headers and y.

here are real long tubes
this would be extremely hard to do on fwd v6 but i'm not sayin impossible, some fabricators are nuts!

and if you couldn't tell a difference from putting on obx v2's on a 3.5 and then tell me your intake setup will be noticeable then you're retarded lol. its not a cat back or a SRI... <<THOSE are barely noticeable. its extremely similar to putting on a y pipe on a 4th gen, you WILL notice a difference, don't be silly.


OP good luck finding a set. they're sold out everywhere i've looked

 

you say dyno's are pointless bragging rights but you're bragging with your own numbers that you intepreted by looking at the speedo with your eyes so i take it your brain is a better tool for measuring power gains on a car than a dyno? also the worlds fastest maxima runs with headers LOL, i should mention he could've been faster with stockers!

LOL i count a hair over 6 seconds in that vid with your mods, which is about right considering stock does 0-60 in the 6.5-7 sec range. you could hit 6 or slightly under if you shifted 1-2 like a bawss... i'd like to see a vid of under 5 seconds with your bolt on mods and no tune.

not trying to be a **** disturber but i gotta call bs on some of your claims

 

yet.

 

----->http://forums.maxima.org/7854364-post86.html<-------




I would re-edit your grossly incorrect blanket statement if I were you.

 

@ aackshun

hah, Chochi-chochi-chochi

Wow, I laughed so hard that that was your proof. I do like the arrested development whatever you call that thing.

Since the first dyno you changed: UDP, 3" cattman cattback, OBX headers

Gains: 13 pk hp, 20 pk tq... that's a lot of work for those gains... that's easily over 1k invested in parts...

So you're right, those headers really do make a difference... take off 5hp/5tq for the UDP, 7hp/7tq for the cattback, that leaves you with about 1 hp and 8tq for the OBX... Thanks for proving my point. I'll go chase down v8s now, like that new 5.0 mustang that didn't expect to look over and see me leaving him right from the line. Thanks for the input. You'd do better with a 2.5" exhaust, that exhaust velocity has to be dog slow. You're not creating enough of a scavenging from the engine and you're killing your entire powerband with that bull**** 3". I've got a 2.25" muffler. Just wait til I take the cap off this bad boy. Fastest fully loaded NA maxima ever. You just sit back and bolt on bad man.



@ carsnwomen91

This time use a stopwatch instead of your fingers.

 

Wow..... Not worth my time, lost cause.

 

You serious? Are u talking about them first ever long tubes on the 7th gen section?

 

link?

 

Got you good. Dyno don't mean ****. It's too easy to manipulate. How can someone just blindly believe a dyno sheet with a few lines on it?

 

Very Interesting post above, lol

I'm no expert but I think the stock headers on our car are crap compared to Cattman and OBX design, disregarding the fitment issue on the OBX. Nissan could of made them better from the beginning IMO. Its been covered many time. Less curves and bends make more of a direct flow, also the size of the pipeing is bigger too. The max gains I'm sure are not thru the whole curve but at about 4,500+ rpm there are great gains proved. I mean I could just gut the pre-cat, save money and call it good, but there are proven gains with headers/y-pipe up to 30 hp. I don't think that could even compair to ported and polished stock headers.. Then again there is alot of work involved to do something like that.

 

this guy,

 

This is my nearly completed front manifold which still needed to be polished. The cross-sectional area where the 3 runners collect has been increased by 30%, and each runner's cross-sectional area is increased by 15% and port-matched to the exhaust outlets of the engine. This is a percentage increase in capacity and results in the flow-rate being greatly increased by these percentages.

I think we all can agree that the stock vq35 has a great even power dispersion throughout the rpm range. All my setup does is bump this entire evenly-dispersed power up a notch. Around a 25% larger notch. This is just an example, and all areas which choke flow are opened (and believe me in the stock manifold and cats there are alot of these). And I could price these for you much lower than OBX if you send me your core manifolds/cats back. That's for the ported/polished manifolds and gutted cats. I could also tell you my y-pipe trick that will yield even more serious power gains. "Stock headers" + my y-pipe = serious daily driving power. You should reconsider your options.

 

Also, because the runners are polished, quality will never degrade over time and these things will fit like a glove... just saying

 

On mobile... https://maxima.org/showthread.php?t=646490&highlight=long+tube+header s+7th+gen

 

Yaya cast iron wins in longevity... your still running a log style manifold correct?

Dude, I looked at the times in ur video... its approx 6 seconds.

Still awaiting to see a sub 5 sec 0-60 with your fully bolted and untuned max lol

Mine will do 4.42 seconds on the dot if Inject rice extract directly into the confusion chamber

 

obx headers. not as short as shortys, but still not long-tubes. but just wait, i'm cookin somethin up here,