5th Gen / 5.5 Gen Header Thread
Originally Posted by OOmaxSE
How necessary is it to relocate to the collectors? It makes more sense to have it at the collectors to me, but I do know that the stock manifolds have o2 bungs at the primaries. It probably makes a difference in a performance aspect?
Anyone buy OBX headers from ebay and have fitting issues??
I know most people say go with the cattman headers, but thats a good 800 dollars and the hotshots are a done deal. a few months from now ima be looking into some headers, gotta know what to look into and where to buy them.
I know most people say go with the cattman headers, but thats a good 800 dollars and the hotshots are a done deal. a few months from now ima be looking into some headers, gotta know what to look into and where to buy them.
Originally Posted by babyboyws6
Anyone buy OBX headers from ebay and have fitting issues??
I know most people say go with the cattman headers, but thats a good 800 dollars and the hotshots are a done deal. a few months from now ima be looking into some headers, gotta know what to look into and where to buy them.
I know most people say go with the cattman headers, but thats a good 800 dollars and the hotshots are a done deal. a few months from now ima be looking into some headers, gotta know what to look into and where to buy them.
Originally Posted by deeroledice
If i get Cattman or OBX headers for my 2001 SE, will i need to change any sensors?
No, either re-locate the secondary sensors or sim them.
Originally Posted by NmexMAX
This might help. http://forums.maxima.org/showthread.php?t=512293
ViperVadim - OBX headers - "if you can replace the flex section and the outlet piece with 2.5in piping more gains will be had in the midrange and top-end."
Same piping as the cattman headers = damage
Newbie - Just Registered
Joined: Feb 2007
Posts: 11
hmm.....
Ok please dont flame i read the whole thing. I cant find a 3.5 2002 exhaust system with headers Y-pipes and all and all on catman's website are for 3.0 or cat backs. I want the whole shabang! OBX's website is beat cant see which engine its for. i just want the whole exhaust!!!! My i35 is just dying to be unleashed i got the money just got no goodies 
Thread Starter
Joined: Apr 2004
Posts: 16,551
From: Fairfax, VA
Originally Posted by nicenotrice
Ok please dont flame i read the whole thing. I cant find a 3.5 2002 exhaust system with headers Y-pipes and all and all on catman's website are for 3.0 or cat backs. I want the whole shabang! OBX's website is beat cant see which engine its for. i just want the whole exhaust!!!! My i35 is just dying to be unleashed i got the money just got no goodies
to call.... or not to call.... it's not even a question
yeah def call them up, because they dont show their headers on their website but it dont mean they dont sell them... theres alot more you'll learn from them if you call
Sorry for asking a question that may have been covered:
Im buying hotshot headers for my 5.5...will I run into any fitment issues? I was reading about the EGRs and I recall some had fitment issues with the AC lines.
Im buying hotshot headers for my 5.5...will I run into any fitment issues? I was reading about the EGRs and I recall some had fitment issues with the AC lines.
Originally Posted by SLVRMAXX
Sorry for asking a question that may have been covered:
Im buying hotshot headers for my 5.5...will I run into any fitment issues? I was reading about the EGRs and I recall some had fitment issues with the AC lines.
Im buying hotshot headers for my 5.5...will I run into any fitment issues? I was reading about the EGRs and I recall some had fitment issues with the AC lines.
positive? if so then thats a relief...at the price I cant pass these up for Cattman headers..even if their material is not as good and the gains will be somewhat less..thanks for the response
Originally Posted by SLVRMAXX
positive? if so then thats a relief...at the price I cant pass these up for Cattman headers..even if their material is not as good and the gains will be somewhat less..thanks for the response
HS = Cattman Gen 1
HS > Cattman Gen 2
HS > Cattman Gen 3 <-----(not totally sure but it looks like it from the dynos)
Ever try reading the first page of this sticky? 
Originally Posted by Puppetmaster
And these 2 Hotshot threads:
http://forums.maxima.org/showthread.php?t=450524
http://forums.maxima.org/showthread.php?t=435912
http://forums.maxima.org/showthread.php?t=450524
http://forums.maxima.org/showthread.php?t=435912
I read those but I also read somewhere that someone w/ HS had a bad installation exp. b/c the ypipe was extremely close to the oil pan and draining oil would result in it spilling over the ypipe. I know the general consensus is that HS fit fine but Im sure there are some that ran into problems.
Also, the HS headers Im getting have minimal rust..I could see small brown spots on the ypipe..not the headers so much (very minimal on the headers). Is this a cause for concern?
Also, the HS headers Im getting have minimal rust..I could see small brown spots on the ypipe..not the headers so much (very minimal on the headers). Is this a cause for concern?
5.5 gens do not have EGR systems, so you don't have to worry. The AC line should not be an issue although I've read that someone had a problem with the clearance of their 5.5 gen. Either way, you won't have a major problem with HS installation, but you may have you slightly bend your o2 sensor at the MOST.
Originally Posted by SLVRMAXX
I read those but I also read somewhere that someone w/ HS had a bad installation exp. b/c the ypipe was extremely close to the oil pan and draining oil would result in it spilling over the ypipe. I know the general consensus is that HS fit fine but Im sure there are some that ran into problems.
only the VERY early generation HS headers have problems...and they had fitment issues not ypipe too close to the oil pan issues....but i am sure those don't exist no more...
Im looking into buying some exhaust wrap for the ypipe and headers.
http://store.summitracing.com/partde...5&autoview=sku
Has anyone used this? More than reducing heat in the bay Im really looking to prevent possible rust on the parts. The description does not mention that it will prevent rust so Im asking if any of you have this and whether it prevented rust or not. Are there any downsides of using this?
I also saw this:
http://store.summitracing.com/partde...art=DEI-010301
http://store.summitracing.com/partde...5&autoview=sku
Has anyone used this? More than reducing heat in the bay Im really looking to prevent possible rust on the parts. The description does not mention that it will prevent rust so Im asking if any of you have this and whether it prevented rust or not. Are there any downsides of using this?
I also saw this:
http://store.summitracing.com/partde...art=DEI-010301
post the pics i showed on the nycmax page. the headers fit fine, the 02 sensor hits the compressor, not the header! you are getting paranoid!
Originally Posted by SLVRMAXX
edit: someone in the other maxima forums has a 5.5 gen with hotshots aswell and he said I will run into problems during the install: relocate the front o2. He also said the header hit the ac condensor.
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Posts: n/a
yes i am positive...go check out all the header threads...and you will see what i mean...and if anything, HS will probably score higher than cattman....at least the new cattmans...
HS = Cattman Gen 1
HS > Cattman Gen 2
HS > Cattman Gen 3 <-----(not totally sure but it looks like it from the dynos)
HS = Cattman Gen 1
HS > Cattman Gen 2
HS > Cattman Gen 3 <-----(not totally sure but it looks like it from the dynos)
I was searching for threads regarding running rich after headers.
http://forums.maxima.org/showthread....t=running+rich
Post # 11. I know its an old thread but it beats making a new one. Anyway, I always thought when the car runs rich for a prolonged period of time, carbon deposits will settle on the valves. IMO thats hurting the car. Correct me if Im wrong.
http://forums.maxima.org/showthread....t=running+rich
Post # 11. I know its an old thread but it beats making a new one. Anyway, I always thought when the car runs rich for a prolonged period of time, carbon deposits will settle on the valves. IMO thats hurting the car. Correct me if Im wrong.
well Im getting dyno tuned tomorrow...I heard that once the battery gets d/c the tuned AFC settings go away. But from what I gather all the info is already stored within the AFC. Can someone confirm?
your data will be saved onto the afc whether your car is plugged to the battery or not...
Why not just go to the direct source? Call Brian and see when the next batch is gonna be ready. I dont know what Brian's charging now but I know mine were cheaper than 916 shipped directly from him.
The ceramic coating also keeps the engine bay cooler and the heat inside the headers, which supposedly improves exhaust velocity.
I replaced the cast iron exhaust manifold with a ceramic coated header on another car I used to have the drop in underhood tempertures was very noticable. The cooling fan used to run 10-20 minutes when I'd turn the car off during 85+ temperatures with the stock exhaust manifold but with the ceramic coated header, even in 100+ temperatures in heavy trafficif the cooling fan came on at all when I turne off the engine, it was for maybe 1-2 minutes.
I replaced the cast iron exhaust manifold with a ceramic coated header on another car I used to have the drop in underhood tempertures was very noticable. The cooling fan used to run 10-20 minutes when I'd turn the car off during 85+ temperatures with the stock exhaust manifold but with the ceramic coated header, even in 100+ temperatures in heavy trafficif the cooling fan came on at all when I turne off the engine, it was for maybe 1-2 minutes.
OBX
I'm wondering what the differences between the 3.5 Altima OBX headers and the Maxima OBX headers are? They seem to be made better for the altima (i.e. more or less equal length y pipe) I'm sure there is some problem with them not working with the maxima but i can't come up with anything. Heres the link to them on ebay : http://cgi.ebay.com/ebaymotors/OBX-E...ayphotohosting