JSutter

iTrader: (46)

http://cgi.ebay.com/ebaymotors/OBX-H...Q5fAccessories

PulsarGTS

iTrader: (6)

thats new. hmm obx quality, but they actually got the design right. I think I may post this in the 5gen section too.

JSutter

iTrader: (46)

Holy hell! Stillen's old equal y pipe meets Hotshot headers. Under $400, only issue is lack of EGR.

ajcool2

iTrader: (43)

Interesting indeed.

ChrisMan287

iTrader: (34)

Very interesting. Might have to get it and try it out.

QNO_A32

iTrader: (7)

obx ftw???

Coolsaber57

iTrader: (22)

It says it's for the VQ35, not the VQ30.

Would they be compatible? I wouldn't think so.

ChrisMan287

iTrader: (34)

Nope not compatible. Looks like you'll either have to drop a 3.5 in or get a 5.5 gen.

Puppetmaster

iTrader: (48)

Why not? I think all you need is to weld in an EGR port.


IIRC, I think these are the same ones Tilley had on his N/A 4.5 Gen.

ChrisMan287

iTrader: (34)

Isn't that y-pipe different then the 4th gen?

Puppetmaster

iTrader: (48)

The 5.5 Gen y-pipe is different, but if you use the entire set, it should work fine, just like the way the Cattman and Hotshot headers fit, with their respective y-pipes (I mean the y-pipes that come with the headers, not the Cattman y-pipe sold separately), on VQ30s and VQ35s.

Btw, I was just noticing, is that rear header one with the collector/y-pipe? Or are my eyes playing tricks on me? If so you have no choice but to use the whole set anyway.

perkman87

iTrader: (6)

Say you do purchase these, Will you need to get a bung welded in for the O2 sensor on the Y-pipe area?? ANd what kind of performance with a stock exhaust back?

xlcrew

iTrader: (17)

i have OBX headers on my car. they don't have the equal ypipe portion, they just come together like a regular ypipe. i will say that the fitment was an issue. i had to modify the flanges because the holes for the studs weren't lined up right. i had to basically have a pipe made to fit to connect the front header with the ypipe because the fitment was over 2" off. also i had the part after the flex pipe redone to have a 2 1/2" pipe put on because they only had 2" pipe on there. so after the headache of putting them on and modifying them i have put bout $500 into them to make them work(that also includes purchasing the headers to begin with). i wouldn't recomend them if you aren't mechanically inclined or dont know someone who can't modify them. just my .02

ChrisMan287

iTrader: (34)

Hm your right, I guess it'll work.

MOHFpro90

iTrader: (11)

Yes its one piece. Only flange I see is the front header.

Puppetmaster

iTrader: (48)

Looks like they already have a bung on each bank and a bung on the y-pipe. That is more than enough for your primary O2 sensors. I'm not even sure why they have more than two bungs - for a wideband or to give you options? Haha.

perkman87

iTrader: (6)

I got ya. I should have payed attention better.

essential1

iTrader: (5)

*There seems to be more discussion inthe 4th gen section so i'm just copying the post I made in the 5th gen section. *


This will definately flow better than stock for us 5 and 5.5 gen guys. The quality and fitment probably sucks, but we cant really complain becuase it seems like they are trying to give us a decent product. Look how many times they've changed the design and each time was better than before.

Factory style > shorty > long w/ 90 degree collector > long w/ smooth collector > equal length. (or what looks like equal length)

It looks like they are trying. And for that price, its worth a try.

This seems to be a 2 piece design from the pictures. Similar to cattman's gen. 1(?) design. It's gotta be a pain to install.

OOmaxSE

iTrader: (19)

Another concern may be the ypipe hitting the oil pan bolt?

nismology

iTrader: (8)

The turn coming from the rear bank is awfully sharp. Cattman's collectors are also superior. But it's cool that OBX's design keeps evolving for the better.

JSutter

iTrader: (46)

We wont know til some one tries but they should bolt on a 4th gen. The problem lies in OBX's past quality control. This is their 3rd or 4th design. If you remember the 1st set were shorties, bascially stock manifolds with a y pipe. A member test fit them and they didnt clear the front MM. Strike one. Then they came out with that dreaded "T" collector with slightly longer primaries. They even had more than one flex section because fitment varied. JUNK! Then more recently they had long tube primaries with an unequal Y, the rear header was part of the Y, similar to the newest gen. This Y pipe design is a complete rip off from Stillens original design. There was nothing wrong with it. Stillen redesigned their pipes to fit later model VQ's, the 2 piece Y which fits all 3L's. They used the space available, Hotshots and Cattmans donut bend hangs down somewhat. This bend stays tucked up in. Anyhow it may not be the best design but at least they are trying.

JSutter

iTrader: (46)

Oh and as for the O2 sensors; 5.5 gens have 4 up front, thus there are bungs all over. Im sure we can make it work.

JSutter

iTrader: (46)

Old OBX:


Hotshot:



Stillen Equal:

JSutter

iTrader: (46)

nismology

iTrader: (8)

Still don't like how tight that loop is.

Puppetmaster

iTrader: (48)

Good point, I didn't even notice that.

For comparison, here's what the Cattman Gen IIs look like:

4DRSpeed

iTrader: (22)

Interesting. Who will be the first to try? If I had the cash at the moment I would give them a try.

Kevlo911

iTrader: (36)

I might be willing to try in the near future. Stay tuned.

gpmax

iTrader: (2)

How big is the collector into the cat (2.5")?

liqidvenom

iTrader: (6)

if things change for me i'll probally try it with kevlo as well.

Crusher103

iTrader: (10)

are there any adavantages to having equal-length besides sounds, because only the Cattman ones have a loop in them thats atleast manageable, the stillen one looks almost as bad as stock

MOHFpro90

iTrader: (11)

Someone else can really chime in about the other advantages, but I know that it has something to do with the pulses in the exhaust flow matching up...not familiar with the details.

Tatanko

iTrader: (34)

I may have to try these in the near future Honestly, I would pay this much just to have the superior sound. VQ's are capable of sounding soooo good with the right exhaust. Using these headers would be a great way for me to completely eliminate anything dealing with EGR, too.

chillin014

iTrader: (67)

so it doesnt matter that they are made for the 02-03 maxima?? that sounds like its asking for fitment problems but..what do I know about exhausts fitment anyway Oh and that one piece **** is NOT gonna fly...what if you have to remove the y pipe??? your going to have to remove the whole header, thats ridiculous.

whats wrong with the sharp bend, nismology?

Kevlo911

iTrader: (36)

The exhaust system of 5th gens is nearly identical to 4th gens. If it will bolt on to a 5.5 it will bolt on to a 4th gen. But there will be no EGR hookup. Hopefully they fixed the filament problem of their previous version and the small collector pipe.

chillin014

iTrader: (67)

well thats good to know. Now what is the deal with this one piece rear header...There have been times where I had to pull the y pipe and I dont know how possible that even is with this set up.

MaximaSpd85

iTrader: (14)

taken from a current 3rd gen forum thread...
http://forums.maxima.org/6765381-post64.html

nismology

iTrader: (8)

Potential pressure drop compared to a more gradual bend. Again, I just don't like it. That's my opinion.

liqidvenom

iTrader: (6)

i think if you are able to keep away from t intersections then you will be ok. The amount of fluid flow through there isnt going to cause that large of a head loss in the pipe.

if this was a 5" pipe or something with a constant flow maybe, but in this instance not so much.

pmohr

iTrader: (26)

Well, you could always take it to an exhaust shop after install and have them cut the pipe there and weld on two flanges. Actually, if you made up some sort of a jig you could do it off the car, and probably end up with the same fitment as before.