95 or 96 = obdII?

[cys19]

I remember reading something that '96+ 240sx's have some sort of obdII, and it would require sticking some part of the engine into some type of computer for the emissions test. But, I have a friend who has a 1995 240sx, and he said it's actually '95+ b/c his car has obdII too. So now I'm confused. ????????????

I ask this question because I plan on swapping in a sr20 when I buy a 240sx, and I heard that I would be butt ****ed by the emissions if I were to stick a different engine into an obdII car.

[Mr1der]

96 is obdII

it's a diagnostic computer that plugs in behind an ashtray or under the dash or some other awkward place

'95 shouldn't have it, and they don't test them unless the car is a 96.

[gabossie]

Apparently some 95's were OBDII. Mine isn't, but mine was one of the earlier ones manufactured. They started introducing it before the end of the 95 line.

[Mr1der]

bah, I say you all buy '89's so you can be cool like me and Skwerel, and The Super Ninja when ever he starts making his presence known.

[cys19]

so how do '96's with sr20's pass the emissions? just curious.

[yellow_jacket]

Register it in a non emissions county. The computer that hooks up to your car pulls the vin# from the ecu. So if you just hook another car up, they will more than likely come after you, your car, and the tech that passed you.

[cys19]

What if u KA-T'd a 96+? I'm still newbie. They'll just look for the catback right? dunnnnnnnoooo.

[IveBeenBad]

bah, I say you all buy '89's so you can be cool like me and Skwerel, and The Super Ninja when ever he starts making his presence known.

I have an 89

[Eli]

^ OBDII are found in ALL 96 and newer vehicles. Some 95's might have it. However 95 and older cars also have a "on board diagnostics system." Hence OBDI

The real difference is that in 96 al gore decided that he wanted stricter emissions and while he was at it make all the Diagnostics plugs in ALL makes and models to be universal hence only one type of connecter plug. SO then it can make it easier for mechanics to diagnose cars. OBD also is a lot more complicated in that they have a few emissions crap etc.

[Mr1der]

I have an 89

good thing it's national high five day! (I'm not making this up)

HIGH FIVE BRO!

[89240sx]

I have an 89

yup 89 here to!... who needs obdII :ylsuper

[MECPInstaller]

my 95 240 has a white plug under the passenger side of my dash near the center console was running rca cables and found it is this obdII? will try go get a pic if i remember

[cys19]

that would be nice!

[yellow_jacket]

What if u KA-T'd a 96+? I'm still newbie. They'll just look for the catback right? dunnnnnnnoooo.

They just visually inspect for a cat, check you gas cap, and then plug into your ecu. So if you have a modified ecu you will fail. If you use something like an AVC-R you will still pass.

[cys19]

How will the AVC-R help me to pass? And does adding turbo modify the ECU? Sorry if I sound too newbie.

[IvoryJ30t]

my 95 240 has a white plug under the passenger side of my dash near the center console was running rca cables and found it is this obdII? will try go get a pic if i remember

consult port.

[9095240SXDUCK]

89 and 90 here! I hit OBDII even through i work on cars for a liveing!

[240SXer]

My 95 has a OBDI port and a OBDII, nobody belives it but it does. You can scan it with either one. But it's only got 1 o2 sensor? Go figure...

[yellow_jacket]

How will the AVC-R help me to pass? And does adding turbo modify the ECU? Sorry if I sound too newbie.

If you turbo your car, the turbo adds extra air into the engine. Therefore more fuel is needed. This must be accomplished by having the computer add more fuel. This can be done by either reprogramming the ecu, replacing it with a standalone system, or adding something like an AVC-R. Basically the AVC-R tells the computer more air is coming in than is actually coming in. This allows the computer to richen the mixture up. If you go standalone or reprogram your ecu, because the program has been changed, they won't pass. It just doesn't communicate with the states computer. At least I havn't heard of anyone reprogramming OBDII ecu's and having them remain compliant.

Here is some great news from todays paper. They are adding more counties in GA to the list that have to improve their air quality. This will almost definetely mean that cars in those counties will now have to pass emissions.