I have a similar problem while we're already on the topic..... I had done a sohc vtec swap into my crx and the vtec doesn't seem to do much. I didn't do an obd conversion, it is wired up to an rpm switch. And..... i don't have a oil pressure switch on the vtec solenoid. when the vtec kicks on, the engine changes tone to deeper and a little louder, but doesn't seem to do anything.
I will try changing the cat, but could it be the oil pressure switch?
I will try changing the cat, but could it be the oil pressure switch?