Hi,

I have a JDM B18C motor and a APEXi WS catback exhaust, without a cat on my 98 EK hatch.

With the JDM P72 ECU I'm not running any codes even though the 2nd O2 sensor is not plugged in.

I'm looking to buy a 2.5" catalytic convertor, but I'm not sure if I should get one for an OBD2 car even though I'm not getting any CELs.

Does anyone have any experience with Car Sound / Magnaflow cats?

Thanks,
Adam