OMG.....VERSA HEADER

[blindsnyper]

http://cgi.ebay.com/ebaymotors...ories

compaired to this it looks legit...

i wish i had $200

[mightyversa]

Hey Snyper, GOOD JOB!! Looks like I will be getting one of these!!! My dreams have come true!

[viet510racer]

nice find

[shiryu0]

whats the point?

the collector piece in the stock header is smaller than the rest of the pipes............

on the OBX header its 'fixed' on the header, but the downpipe now has the smaller diameter pipe before the flex part..............

and then u need a cat

[mightyversa]

Im not a pro, but from what I gather from doing the automotive service technician course......the header that OBX is offering might actually be an upgrade. As you can see in both pictures, there are a number of differences in both.

1. The primaries are in different spots, therefore a different scavenging affect might take place.

2. The primaries are a tad bit larger, but how large do you really want to make them? a bit bigger is plenty.

3. The EM (exhaust manifold) seems to have a restriction at the collector piece just before the O2 sensor than it opens up again, thats a big restriction on behalf of Nissan and the OBX has none.

Looks like its more of a straight through flow design rather than having bends here and restrictions there. And of course, it has the O2 sensor holes so that still gives you your correct O2 readings.

All in all, I would say its a good addition for the Versa nuts out there like me. And you dont really need to put a cat back on it....actually in theory, cats are not restrictive like people think they are, but take em off anyway, its illegal yes but who cares its not like the authorities are watching for people with cats taken off.

[Red Devil]

"This header also removes the factory emission components for improved exhaust flow."

Yeah.....enjoy having the glaring check engine light and limp home mode.....

[mightyversa]

Yeah I know thats what it says, but take a look at the pics, it has the holes pre drilled and threaded for O2 sensors....thats the only emission components on the EM and another component is the Flex coupling, and thats is on the pipe as well, I dont see what will set off the CEL, I will contact the seller and see what is what.

Does anyone know if there is a WUC (Warm Up Converter) bolted to our stock manifold? If so, then this doesnt include it, but MIGHT set off the CEL. Most ULEV vehicles today have 2 converters.....a WUC and a secondary Converter in the middle, just for added protection for the environment. I had a 95 Civic Hatch, put a header on it with full exhaust and the CEL didnt come on when I took the WUC off, so thats why I say MIGHT, cause it might not affect anything.

[feloniousmonk]

its illegal yes but who cares its not like the authorities are watching for people with cats taken off.

In your neck of the woods, perhaps they don't. In US states that have strict emission control, such as CA, they do check to see if your car has catalytic converter(s).

[mightyversa]

Really? Wow, I guess this Header will benefit us Canucks more than anything I guess. Is the rest of the states as strict as Cali? Or is it just Cali with the strict emissions?

[blindsnyper]

WUC????

[feloniousmonk]

Really? Wow, I guess this Header will benefit us Canucks more than anything I guess. Is the rest of the states as strict as Cali? Or is it just Cali with the strict emissions?

It varies from state to state, and in some cases just cities. Some have their own rules, some have adopted the same rules as CA (like greater Portland metro area in Oregon). Here in LA smog checks are required every two years (in addition to annual registration renewal). Failure to pass means you do not get your registration renewal until you pass. Test entails sniffer, OBD2 hook-up and visual inspection. In my BMW the cats are bolted right to the headers, not easily seen, and the tech nearly gave me a fail thinking that I had removed them and installed headers... that is until another tech who was more familiar with the engine (same as E46 M3) came over to point out the cat. My tech wasn't about to take my word. Yah, it's pretty strict. Testing stations are pretty much state sanctioned monopolies. They get guaranteed income as long as they play by the books (or don't get caught). It's a pretty good money making scheme and doesn't really have any impact on air quality (or lack of it).

[mightyversa]

Yeah, seems like there is a warm up converter......right at the beginning of this diagram, also looks like, but I am not 100% positive, another converter then a resonator....not sure though, I guess I should look under the car next time I get her serviced!

[mightyversa]

Yeah it seems I was right. Our stock manifold has a Warm Up Converter and the header system doesnt include this converter. This was the response from the seller of the header:

"hi, accepts the o2 sensors fine, but this has no cat material in the header (which is what we meant by removes factory emission compoents). thanks"

So there you go, good for V's where emission control isnt strict like here in Canada, but bad for places like California.

[biggie]

Being that the O2 is behind that cat on the system without a cat the O2 may send different signals with this system. Could get a CEL or worse mpg. Would take some testing of the product to find out I guess.

[mightyversa]

Yeah I would agree. The Upstream O2 Sensor will read normal, the Downstream O2 Sensor will read the same as the upstream and thats the problem...it shouldnt read the same, if it does than the O2 Sensor knows the Cat Con is not working properly and throws the CEL. I guess as you said biggie, it would have to be tested!

[WORKS89]

You could alway just trick the O2 Sensor.

[mightyversa]

How do you trick it? Cut the sensor off and cross the wires?

[WORKS89]

How do you trick it? Cut the sensor off and cross the wires?

This is what we do with lancers and Evos when we run test pipes instead of CAT's. first remove the O2 sensor that comes after the CAT and then in it's place screw in a anti-foul plug that you can get at a local parts store. then screw the O2 sensor into the anti-foul plug. The idea is that you move the O2 sensor out of a pipe just enough so that the O2 picks up exhaust coming out of the motor, but not all of it, so thinks the car is burning really clean because it's only getting a fraction of the air. So guys that are running really awesome setups have to double stack 2 plugs. If I can find the write up I'll post a link.

[WORKS89]

I found it! Enjoy!

http://forums.evolutionm.net/e....html

[mightyversa]

SWEEETTT....good job 89!

[Red Devil]

yeah, let me know how it goes once you get the CEL, worse gas mileage, rusty header(it doesn't say what grade stainless) and I don't know what quality you expect from a $200 header but you'll probably only get 5-10hp.

[WORKS89]

yeah, let me know how it goes once you get the CEL, worse gas mileage, rusty header(it doesn't say what grade stainless) and I don't know what quality you expect from a $200 header but you'll probably only get 5-10hp.

Dude, you dont need to be so negitive. Most Versa people I know are really eger to get tuning, and this I just the thing they've been looking for. Besides, OBX is actually a really good brand. They only get a bad name because they are mostly sold on Ebay. That doesnt make them bad. Every 240sx own that I know that has used them said that OBX was better then any aftermarket header they've used, this includes performance, looks, and durability. I'm personally exited to see stuff like this finally coming out for the versa, so were you choose to doubt it, I choose to welcome this advancement in the market and I'll place my judgement after OBX has had a chance to prove itself on the Versa, not before.

PS

Read the write on the CEL cure, I'm pretty sure it'll work for a already clean burning Versa if it'll work for a 500HP Evo.

[mightyversa]

I agree totally with 89, another advancement in tuning our V's. Companies are starting to realize the potential and soon we could be looking at having things like performance intake manifolds, engine rebuild kits for forced induction applications and hell, probably a working turbo kit. Hell yeah GO VERSA GO!

[Gr8dave37]

What I am wondering is why it's only for the hatch? Seems to me in my limited car knowledge that the only real difference between the two vehicles is the rear doors and hatch. Seems to me that if exhaust pipe is the issue relative to maybe direct bolt on rather than custom exhaust that anyone who is going to spend the money on this would have a custom exhaust pipe made for the car anyways.

[manvan]

ok, so lets say i do get the headers, will it fit on mine and blindsnipers and who ever has a cat back with custom piping?????????????

[MinisterofDOOM]

Why would they claim it fits the HB but not sedan?

[blindsnyper]

ok, so lets say i do get the headers, will it fit on mine and blindsnipers and who ever has a cat back with custom piping?????????????

yes, unless they moved the cat for some reason

[biggie]

Why would they claim it fits the HB but not sedan?

The exhausts are slightly different lengths between the 2. Although I would think from header to cat would be the same and the catback would be the difference.

[reyes1212]

So who is getting this?I am really considering doing it right now.

[MinisterofDOOM]

Although I would think from header to cat would be the same and the catback would be the difference.

That was my assumption as well. Could be wrong, but I don't see any reason why Nissan would change things in front of the cat between the two cars. Plus if it was that different you'd likely see different HP ratings for the two versions.