Help w/ Emission

[Tensa_Zanget]

The converter is too large for that engine as far as emissions go. If you can get it to pass with the same converter, it's gonna have to be from the lowest gear allowed. The cat isn't flowing enough gas from that 2.0L at those engine speeds for it to work properly. Your best bet is to retard the shit out of the timing and retry. If that don't work, you need to install a smaller converter, possibly a 2 inch converter, 2.25 max.

But that is the same cat that i got that my friend recommended me. He also got a crx with a ls/vtec and he mange to pass his emission test..besides if its the cat wouldnt i fail the HC ppm and CO %?

[blackshine007]

But that is the same cat that i got that my friend recommended me. He also got a crx with a ls/vtec and he mange to pass his emission test..besides if its the cat wouldnt i fail the HC ppm and CO %?

Nope. According to your emissions numbers, you have a lazy O2 sensor judging by the CO numbers. You want them to be anywhere near .20 or lower. You may wanna consider changing that sometime. But even then, that would show up under HC's meaning that the failing O2 sensor is causing the computer to dump fuel. But your HC's are in a controllable range so that's not part of the problem. The converter you bought is just like your stock converter; it's a 3 way catalyst. It has to get hot enough to burn off any unburned fuel (HC) and CO. It has to eliminate or seriously reduce the levels of NOx. Retard your timing and try it again. But ask for a pretest so you don't waste your second (free) test.

[Tensa_Zanget]

Nope. According to your emissions numbers, you have a lazy O2 sensor judging by the CO numbers. You want them to be anywhere near .20 or lower. You may wanna consider changing that sometime. But even then, that would show up under HC's meaning that the failing O2 sensor is causing the computer to dump fuel. But your HC's are in a controllable range so that's not part of the problem. The converter you bought is just like your stock converter; it's a 3 way catalyst. It has to get hot enough to burn off any unburned fuel (HC) and CO. It has to eliminate or seriously reduce the levels of NOx. Retard your timing and try it again. But ask for a pretest so you don't waste your second (free) test.

As u were saying about my O2 sensor, I dont have the O2 sensor installed at the moment after the swap cus before, i had a d series and its running a one wire o2 sensor so now i need a 4 wire O2 sensor. Surprisingly i still pass the other portion of the test w/o the O2 sensor. As u were saying about letting the cat warm up, i drove the car for about 10-15mins max due to no tag at the moment but will that really helps? As for the timinig i just got the timing light from a friend but i dont know what is the standard degree for a b20b. Also when u speak of timing which one ur talking about ignition timing or the other timing?