I was looking on ebay and saw some headers for around $270. This would be especially good for me because I have a 99 Cali-spec so I might be able to get rid of the pre-cat in the pipe. Does anyone know how hard this would be to install? and will I see a big difference?
Thanks,
Dan

 

http://cgi.ebay.com/ebaymotors/ws/eB...category=33631

There is the link, these are news to me and probably a lot of other guys on here. Those welds look awful, they look globby and not well done, aren't headers supposed to be bent pipes instead of pieces welded together?? I wouldn't waste my money on something that ugly.

Adam

 

yeah, definately not looking pretty....looks hacked....



eric

 

I always heard that headers dont help with performance on maximas. But like The_Bomb said, headers are supposed to be bent, not welded like that, so stay away from those.

 

obx has headers listed for 95-99 maximas. i was just on there today. somebodt should post up a picture of them if they can

 

Not the OBX headers for a maxima, but they are along the same lines...

 

or for headers on a max.

 

no one makes headers for the maxima that can out perform the OEM ones.

 

:

 

ahhhhh ok. Im not worrying bout getting headers for my max, EVER thanks you guys

 

Custom fabricated headers will look like that. The fabricator takes various radius 'U' and 'J' bend sections of mandrel bent pipe, then cuts and welds them together to make the header.

Only high sales volume parts get single piece tubes from the flange to the collector. For a 6cyl engine, that's six custom configurations of mandrel bent tubing. It's just not practical for low volume stuff... as mandrel benders are very expensive, as well as few and far between.

I guess if someone if offended by welds, they could get the local muffler shop to 'crush bend' some one piece tubes... but the performance would be off.

Good Luck!

 

Headers can be welded like that. When some one makes a header that’s usually how it looks. I have seen dyno proof that some home made headers put down more power than the bought bent pipes. Those headers are quality just look at them. I am not saying there will be any gain on a max but just to point out that headers are made that way. Why doesn't some one try them and find out.....

 

looks like some-one will get them, 25 bids already and the price is almost at $300.

 

Cattman was just about to bring out some headers. He tested it on his 97 Max and it showed quite appreciable gains. Whatever happened with that? It's not on his website. I can't search to see where that thread went.

DW

 

Yeah, I was going to say, they're not the best, but I've seen a lot worse looking than that.

 

The Cattman Headers also replace the Y-pipe, they replace everthing up to the cat. Gains where only a little over what just a y-pipe would provide, but still might be worthwhile for Boosted Maximas/99 Maximas/Guys who want every NA Mod. I understand they are a b!tch to install. http://forums.maxima.org/showthread....hreadid=180525 (Search still works for me )

The Ebay headers do not replace the Y-pipe. I thought the purpose of headers was to have equal length tubes off the manifold and for the Maxima that would probably require a Headers/Ypipe como (like the Cattman headers)

Some Cali 99 Maximas have replaced the front Manifold with a fed spec one. Perhaps this Ebay guy would sell a front bank separately to remove the front precat. The rear bank is much harder to remove.

 

Thanks, dude.

DW

 

I was the one about to win these headers , now this is my first time bidding on anything , but iam pi$$ed because they retracted the item can anybody shed some light. i had sombody who was going to put them on for cheap

 

bump

 

Know anyone who's done it? I'd be curious to know if it can be done without any sort of CEL. I'm pretty sure I can pickup a front header for cheap.

 

that guy is about 20 min from me... i'll see what he is about, and maybe why he retracted his sale. i think i've talked to this guy before and he was a bit of a d!ck. anyway, if you guys have any question you want me to ask him let me know.

-jon

 

Interesting item!

 

I could only find a little info on this. If I understand it correctly - The 99 Cali spec Max has an oxogen sensor behind each pre cat. They both must show an 'after cat' reading to prevent a CEL. I belive current Cali spec y-pipes move both oxogen sensors behind the cat that is left behind to prevent a CEL. If you removed both Precats you would have to move both the oxogen sensors from behind the precats to behind the Main cat so they would give a proper reading. I also saw somone mention using an 'O2 Sensor simulator' that will trick the ECU into thinking the O2 sensors are reading properly. I thought there was some talk about this in the Cattman Headers thread I linked above, but I don't have time to read through it now.

Check these threads --
http://forums.maxima.org/showthread....threadid=35387

http://forums.maxima.org/showthread....hreadid=182615

http://forums.maxima.org/showthread....hreadid=161316

EDITED -- To try to explain a little better.

 

NEVER EVER BUY ANYTHING FROM THAT GUY!!! i and many other people have had so many problems with him! lets just say that i bought an obx catback from him and i was complaining that he never answered my emails, and felt like he was d!cking me around. so when i said that he wrote me back swearing at me, told me to go F myself, and never to email him again. and this was after i sent him my money. i asked him about my money and he said he never recived it. (yeah right) so i had to wait 2 months to get my money back... worst buying experiance ever... and i know for a fact that othe people were not happy with their purchase as well. buyers beware!!!! we should definetly put him on the "bad seller list" hope i have saved someone from alot of trouble.

Chris

 

i've never bought anything from this guy, but that was the impression i got from him when we spoke. he was rude and wasn't really willing to give me any of his time to answer questions. i don't know if i caught him on a bad day or something, but IMHO, i'd stay away.

 

his hompage leads you to obx ?i think he wanted more money than what i was going to win them for.how can he4 be a bad seller he has over 9000 good replies.i want my headers.

 

im just telling you my experiance, and even some others on the fourm. there are alot of little things that all do not add up about this guy, but i can't really go into detail for i have to go to work soon. but i was the one who set up a group deal for obx catbacks and let me tell you, it was a nightmare. i wished i had never started the GD in the fisrt place - so many people were confussed, upset, or waited for their product waaay too long. if you want more details fro some one else you can contact erty67 on the org. and he can tell you things about him.

if you already bout the headers then fine, but becareful and DON'T NAG OR **** HIM OFF because i can garentee you that you will not see you headers and will have to get your money back. i wish you luck.

Chris