Modifications and smog

[apzak]

What modifications will keep my car from passing smog? I'm hearing cams will make my car not pass smog, and then I read that JWT cams will pass smog. What about JWT ECU? I hear you'll fail smog with an ECU upgrade. I know HS headers will fail smog, but I am Technoman posted up a write up how to pass smog with HS headers. Intake and Exhaust I know will pass smog tests. Soo, what modifications am I limited to? I'm in New Jersey by the way and smog tests are strict here. Theres always paying the guy extra money to pass, but I don't know anyone that smog tests and don't think a stranger will pass me for extra money.

[tinted]

You can't do the jwt ecu upgrade with OBD II.

apzak, do you have AIM? I want to hear about your 911

[quiksilvia]

every state is diff, but in cali where we get beat like redheaded step children, anything is technically illegal, but they mainly get mad over noise-more from cops though. as far as smog goes, if they think u have a cat and u pass emissions and its not too loud, we're ok. go to a smog place, or call

[apzak]

No ecu/chip upgrade for the 97-98? what alternative do I have? what did technoman do? I know hes got a 97-98edit: o yea I do have aim: zpmada

[C-Kwik]

You can swap in the 95-96 ECU. You will need to change some pins and swap out the O2 sensor for a different one and use an adapter to fit it. JWT recommends using the 96 ECU on a 97-98 as it's a bit easier, but either can be done.

[apzak]

Someone is offering a 96 ecu for my 98 240sx and they had it on a 98 240sx. They said to do everything you said, so I guess it will work. I can only install intake, and probably exhaust. Do you think I'm skilled enough to swap my ecu, sensor and rewire 3 wires on the harness? If I mess something up, what's the worst that can happen? Maybe i'll pay a nissan mechanic to install it if I run into difficulties. When he said rewire 3 wires, did he mean the wires on the sensor, or the wires on the plug?

He said this JWT ECU, and JWT cams will pass smog.

[quiksilvia]

a) we dont know how skilled you areb) if u cant swap an ecu, sell your nissan

[apzak]

[quote=" quiksilvia b) if u cant swap an ecu, sell your nissan [/quote]

uhhh... why? What's with the ignorant remark?

There are thousands, no millions of nissan owners out there, and 90% can't even change their own oil. Maybe if you had a late 240sx, and everythings working great you'd be a little worried about butchering the wire harness, especially if you've never done it before.

[quiksilvia]

whats to bother? the 90% of morons who cant work on their cars, prolly own altimas and maximas and a few z's. but to own a sports car, yuo should know whats going on. swapping the ecu is like 5 times easier than changing the oil, and it has nothing to do with the wiring harness, 3 wires? how hard is that...apply yourself young grasshopper.