NJMaxima01

Here is a clip of my Maxima with the OBX Headers, High Flow Cat, and Greddy EVO2. I also have a Berk Intake set up. Mind you, I took this clip with my phone, so the microphone is not the best. Hope this helps with reviews.

NJMaxima01

Here is what it sounds like from farther away:

Kevlo911

iTrader: (36)

Any pics of your custom ypipe?

NJMaxima01

I will post some shortly. I have to take better pictures in stronger lighting because I am using my cell phone =/ I'll check my pics later today.

grey99max

iTrader: (12)

Good news - I'd really like to see what you did with OBX headers... and how you did it.

Pix, please.

MrDicks95SE

iTrader: (23)

i just finished installing modified obx headers this past weekend and now im having TPS and tranny issues. any of you guys have this happen?

Kevlo911

iTrader: (36)

Readjust tps, prob messed up when you removed tb. Any pics of the modded ypipe?

grey99max

iTrader: (12)

Yeah, show us what you got - you've seen mine......

MrDicks95SE

iTrader: (23)

one of the TPS plugs wasnt fully plugged in. pretty lame, i thought i had major tranny issues becuase it was shifting so hard.
the person i bought the headers from had the down pipe of the front runners enlongated to clear the block and had the exit piping enlarged to 2.5" with what looked like 3 small separate pipes that slid over each other.
i dont have any pics but what i had redone was the second flex section piping to the cat was replaced and centered with a single 2.5"piping and also the stock hangers were removed and had new ones welded on. im going to fix the front header flange since its slightly rubbing against the oil pan. it was modified before but not nearly enough. im also gonna have the front flex section moved further down since its slightly rubbing against the engine block as well. im having bees-in-the-can noises but i could careless since its running properly with no exhaust leaks.
i dont know guys, after all the headaches of doing the installation myself and all the added modifications done afterwards, it all came down to having the headers being more trouble than what it was worth. but its on now and everythings somewhat alright. if i could do it all over again, id get the cattman header/Y combo and have a shop install it for me in 3 hours compared with 3 days....

MrDicks95SE

iTrader: (23)

alrighty just took some for you guys:

grey99max

iTrader: (12)

Ah, OK, those are the "shorty" OBX headers, right? Looks like there was a fair amount of work involved in getting them hooked up.

So what do you think - are they worth it? In performance, I mean ?
.

MrDicks95SE

iTrader: (23)

well compared with stock, its twice as long. i dont think they're considered "shorty headers". one things for sure, the exhaust tone is a lot deeper and the butt dyno doesnt feel too much of a gain but somethings there.
im still sticking with my previous statement of it being more trouble than its worth lol. the amount of modification needed just is a lot of trouble. unless you find already modified headers or have a shop that will hook it up really well then its alright but its just too much work for something that's "supposed" to fit our cars. i still have to have the front flange relocated.

grey99max

iTrader: (12)

This is the long-tube version of the OBX headers I converted when I started this thread:
Is this the set you used ??





And yes, it was a boatload of work...

DasYears

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NmexMAX

iTrader: (22)

Look like HS minus the equal length rear header to y-pipe connection.

blackfu1985

Do you think these headers are better to get than the Cattman ones with big difference in price??

DasYears

the difference isnt that big unless you get a good price on modifying the OBX's or can do it yourself

grey99max

iTrader: (12)

If you read the entire thread ( ! ) then you will see that there was a fair amount of custom work required to get everything dialed in.

The down side is that you have to do much more work than installing the Cattman headers.

The up-side is that you can get these any time from eBay and start to work right away.

Cost difference: The OBX conversion was about $550. The Cattman is - what? - $800?

Cattman headers are a fine piece of work. They are uber expensive and not generally available. The OBX headers are only good for the collectors - the rest of the plumbing is for some other type of Nissan. Everything else is scratch-built. Your choice.

grey99max

iTrader: (12)

Yup, that's what caught my eye. Trouble is that only the 3-tube collectors are usable on our engines - everything else has to be built. Of course, all that, with later cutout, cost $260 more than the original OBX header set.

Not too bad.... just a lot of work.

MrDicks95SE

iTrader: (23)

yes same exact set. i think it was more than a boatload... lol.

grey99max

iTrader: (12)

Then my hat is off to you, bud. Making that collection of tubing into Maxima headers is a major effort...

I wonder how many ORGers did this?

MrDicks95SE

iTrader: (23)

haha thanks. hats off to you as well for posting up pics and such and all the needed modifications. i do see a little more gain as the car does feel smoother and a little quicker than before. exhaust tone throughout the cabin is deeper.
i really wonder what the dyno numbers are... i'll have to check that out sometime.

tedo007

iTrader: (6)

i see that you have fitting problem here on 4th gen.. what about did anybody with 5th gen have the same issue with OBX headers???

MrDicks95SE

iTrader: (23)

i would try posting in the 5th gen forums as well to find more information quicker.

NmexMAX

iTrader: (22)

AKAIK, no one has these headers on an A33B. I could be wrong, but no one has posted about it if they do have them.

NJMaxima01

Okay. Took me long enough, but I finally purchased a digital camera. I saw Mr****s95SE's pics of the modded OBX headers. It looks like he modded his in a different area than where I did. As Kevlo911 is requesting, I modded my y-pipe. Ironically, I am removing the headers from my Maxima this week, as I am selling it shortly. My modded headers will thus be available on EBAY in several weeks. The Buy It Now price will probably be around 200.00 bucks.

Mr****s95SE, did you use the manifold gaskets that came with the OBX headers? I used those and learned how quickly they can leak. I tried covering it with super high temp sealers, but that failed, which I expected. It was more of a temporary fix.

I know it is has taken me a long time, but I will be posting pictures soon. I coach high school soccer, so once the end of August had arrived, my car schedule vanished (Girl required the rest of my time, LoL).

MrDicks95SE

iTrader: (23)

i used the multilayered OEM gaskets. much better compared to the ones that come with it.
ill have to see those pictures as to what modifications you guys did on the pipe. unless you cut the OBX pipe off and fabricated a new one like grey99max did.

Buck96

iTrader: (2)

Bump for updates, sound clips , dyno slips

NJMaxima01

[QUOTE=Mr****s95SE;6037676]i used the multilayered OEM gaskets. much better compared to the ones that come with it. QUOTE]

I should have used the multi-layered gaskets. I just bought two new ones, so I can complete the stock header reinstall, and both gaskets totaled $80.00.

Well, I am off all next week from school, and that should provide me plenty of time to do the headers, pending my friend's schedule. I need his assistance and many of his tools.

MrDicks95SE

iTrader: (23)

next time i get a chance to dyno, i'll get some numbers for you guys.

NJMaxima01

My headers are for sale via Ebay. There are also pictures of the system posted on the page.

http://cgi.ebay.com/ebaymotors/ws/eB...m=280170759750

NJMaxima01

My automobile guru friend and I removed my OBX headers from my 2001 maxima over the weekend, bringing an end to the header adventure for the maxima.

I learned a few tips though for anyone who is interested in adding the OBX headers to his/her maxima.

The first lesson is you will need to modify the pipe as several others in this thread had to do, too. The modification is more of a time consuming pain if you have a friend or the means to make the mod.



The second lesson is that it is okay to use the gaskets that come with the OBX headers, but if you take that risk, be sure to add a custom hangar on the OBX y-pipe. If you don't, the pipe will move around and could eventually lead to a manifold leak, which happened to my system (see the front manifold).



I never got the chance to dyno the headers. Unfortunately, my friend's shop team has not had the chance to purchase a dyno, but there is something to gain from installing OBX headers on a maxima. Even if the horsepower gain is minimal (my buddy said probably 8-12), it is extra horsepower. The other gains are a nice sound and, even better, a weight reduction. The OBX headers weigh 24.4 pounds. I never weighed my stock headers, but the front manifold alone, with its heavy, flow-resisting catalytic converter probably weights 20 pounds.


The headers may not be of the best quality and cetainly were a pain in the a$$ to install (the first time; now it would be cake), but with proper tuning and OBX headers, the maxima can definitely look forward to some decent gains, performance, and style.

Your Junior Varsity Maxima.org Member, NJMaxima01

Kevlo911

iTrader: (36)

How much do you want for them? Did you use a 2.5" ypipe?

grey99max

iTrader: (12)

For $50, any competent muffler shop could cut off the Y-pipe just behind the flex section and make it fit your car....

To the OP,
It looks like all the hard work is done. Why didn't you keep them????

NJMaxima01

My maxima is sold, and the person buying the car didn't want the headers. I own an STi now (Don't worrytho, LoL, I also still have another maxima.)

grey99max

iTrader: (12)

OK - I see.. Well, you certainly paid your dues to get those headers built and installed. It's a lot of freaking work, which you don't appreciate until you go through it. Good job.

01 maxima

Nj maxima I see that you have an 01 maxima and instaled obx headers I'm trying to install mines so I can get them dynod but I'm running into all kinds of trouble any information on the install would be great