New v2OBX headers?
12-15-2008, 07:13 AM
#1
New v2OBX headers?
Found this in the 4gen section. I can't find a pic of the old ones, but I believe they didnt have an equal lenght ypipe and the primaries look bigger on these.
http://cgi.ebay.com/ebaymotors/OBX-H...Q5fAccessories
http://cgi.ebay.com/ebaymotors/OBX-H...Q5fAccessories
12-15-2008, 07:52 AM
#2
I'd be concerned with the overall quality (bought cheap headers for a Chevelle I used to have, broke at a couple welds after a few years) at that price but it does appear to have bungs welded in for all O2 sensors. Probably not going to get the same gains as Cattman's but probably still better than stock.
12-15-2008, 09:46 AM
#3
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.
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.
12-15-2008, 01:18 PM
#4
Gen 1's were four pieces. Then he went down to three pieces, primaries and the y pipe just like the Hotshot headers. One question everyone should ask is how in the world do they want us to install the y-pipe that's attached to the rear manifold... PITA
It looks like it's got all four o2 sensor. 00's need EGR which doesn't seem apparent in this set.
It looks like it's got all four o2 sensor. 00's need EGR which doesn't seem apparent in this set.
12-15-2008, 02:56 PM
#6
http://www.obxracingsports.com/products.php?pk=944#
...weird.. only thing listed on their website is the shorty ones .. which suck... and there 600 bucks on there.. lol WTF i guess next step is to show them the ebay link and ask.. lol EDIT: just contacted them... ill let u know if they respond...
...weird.. only thing listed on their website is the shorty ones .. which suck... and there 600 bucks on there.. lol WTF i guess next step is to show them the ebay link and ask.. lol EDIT: just contacted them... ill let u know if they respond...
Last edited by mist max2000; 12-15-2008 at 02:59 PM.
12-15-2008, 04:41 PM
#7
well, they put the secondary o2 bungs in there, but the secondaries won't work without a cat to read, IIRC, so it's kind of pointless to put them in unless you want to run a double wideband set up. Correct me if I am wrong?
12-15-2008, 06:02 PM
#8
Cattman FTW !
Last edited by blkAEmax82; 12-15-2008 at 06:11 PM.
12-16-2008, 08:39 AM
#10
Here is some info courtesy of Puppetmaster.
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
12-16-2008, 06:52 PM
#12
No headers fit with LTBs on. Read below for headers comparison:
http://forums.nycmaximas.org/showthread.php?t=20592
Summary = OBX not 2.5" after flex section and to use OEM gaskets not supplied POS ones.
http://forums.nycmaximas.org/showthread.php?t=20592
Summary = OBX not 2.5" after flex section and to use OEM gaskets not supplied POS ones.
12-16-2008, 07:43 PM
#14
No headers fit with LTBs on. Read below for headers comparison:
http://forums.nycmaximas.org/showthread.php?t=20592
Summary = OBX not 2.5" after flex section and to use OEM gaskets not supplied POS ones.
http://forums.nycmaximas.org/showthread.php?t=20592
Summary = OBX not 2.5" after flex section and to use OEM gaskets not supplied POS ones.
12-16-2008, 08:44 PM
#15
What are you referring to when you state "their old header design?" I was asking about both OBX gen II and Cattman gen III.
When it comes to the Blehmco LTB II, I believe I've read several threads with people running headers with the Blehmco LTB II.
After further review: I stand corrected. My memory failed me. The best info I can find is on the Blehmco site, and it does not speak to header fits, other than to point out that Cattman headers do not fit. It only speaks to Y pipe fits.
It does seem that the OBX gen IIs MIGHT fit, given the tight elbow where the rear bank goes horizontal and turns toward the rear of the vehicle. Maybe DaveVQ or Puppetmaster can share their personal observations here?
Sorry for the noob call on the "several threads" statement. Let the flaming commence.
When it comes to the Blehmco LTB II, I believe I've read several threads with people running headers with the Blehmco LTB II.
After further review: I stand corrected. My memory failed me. The best info I can find is on the Blehmco site, and it does not speak to header fits, other than to point out that Cattman headers do not fit. It only speaks to Y pipe fits.
It does seem that the OBX gen IIs MIGHT fit, given the tight elbow where the rear bank goes horizontal and turns toward the rear of the vehicle. Maybe DaveVQ or Puppetmaster can share their personal observations here?
Sorry for the noob call on the "several threads" statement. Let the flaming commence.
Last edited by diverdown3; 12-20-2008 at 08:33 AM.
12-16-2008, 09:21 PM
#17
I was talking to n3985 about the old headers and them having smaller piping after the flex section. idk it they fix with LTB or not
12-17-2008, 06:02 AM
#19
AFAIK, DaveVQ is the one of the few to have made the adjustment to make the LTB fit with Cattman headers.
http://forums.maxima.org/5th-generat...ders-pics.html
EDIT: nismology pointed out how tight the loop on the y-pipe is, I wonder if you can actually fit a LTB around those OBX headers. That was the main thing that prevented us from fitting one (unmodified) over the Cattman headers.
Here's my test fit:
On another note, those with the OBX headers should at least be able to change their oil easier than me... lol.
Last edited by Puppetmaster; 12-17-2008 at 06:18 AM.
12-17-2008, 06:11 AM
#21
Here is some info courtesy of Puppetmaster.
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
12-17-2008, 02:35 PM
#23
Here is some info courtesy of Puppetmaster.
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
Since aftermarket headers remove all pre-cats on the 00-03s, something has to be done about the secondary O2s since they now have nothing to monitor and will cause the ECU to throw a CEL to indicate that the pre-cats aren't working right (because they aren't there anymore). The DTCs will be P0430 (front bank or Bank 2 precat) and P0420 (rear bank or Bank 1 precat).
The secondaries can be simulated using a dual output O2 sim, but you need to keep the sensors plugged into the harnesses because the ECU needs to read voltage from the heater wires. These heater wire signals are not simulated by the O2 sim. You can find resistors to simulate these and do away with your secondaries altogether
12-18-2008, 02:51 PM
#25
+1.. for cheaper then a catback.. you can have equal length headers that are 2.5'' all the way through.. ill buy some if someone can help me install lol ill pay w/e...i dont have any access to a lift,..
12-19-2008, 06:58 AM
#27
Where do you live? I've done a few header installs and now have access to a full shop with lifts.
12-19-2008, 10:21 AM
#29
My secondary sensors have not complained once since I installed them (headers) (catless / precatless).
So ....no, the secondaries do not need to 'see' a pre-cat or main cat, they will function fine w/o them.
. Are you sure?
header
Header
loppy thingy
& what else?
So ....no, the secondaries do not need to 'see' a pre-cat or main cat, they will function fine w/o them.
. Are you sure?header
Header
loppy thingy
& what else?
12-19-2008, 10:29 AM
#31
Yep, I forgot about that.
I just recently had to remove my rear manifold to fix an escaped EGR plug. But never realized the flex section was part of the mix, since I really didn't have to mess with it 
I might be up for that considering in Dallas right now it is 24 with an 11 degree wind chill...
12-21-2008, 10:57 AM
#35
Like who? This is news to me too.
AFAIK, DaveVQ is the one of the few to have made the adjustment to make the LTB fit with Cattman headers.
http://forums.maxima.org/5th-generat...ders-pics.html
EDIT: nismology pointed out how tight the loop on the y-pipe is, I wonder if you can actually fit a LTB around those OBX headers. That was the main thing that prevented us from fitting one (unmodified) over the Cattman headers.
Here's my test fit:
On another note, those with the OBX headers should at least be able to change their oil easier than me... lol.
AFAIK, DaveVQ is the one of the few to have made the adjustment to make the LTB fit with Cattman headers.
http://forums.maxima.org/5th-generat...ders-pics.html
EDIT: nismology pointed out how tight the loop on the y-pipe is, I wonder if you can actually fit a LTB around those OBX headers. That was the main thing that prevented us from fitting one (unmodified) over the Cattman headers.
Here's my test fit:
On another note, those with the OBX headers should at least be able to change their oil easier than me... lol.
12-22-2008, 10:43 AM
#38
Depends, my O2 sim has had no codes for the 3 years I've had em, but I know people who've been through 3-4 and they don't last more than a few months w/o throwing codes.