I'm trying to cram as much information in, before I actually go out and buy an engine. I read a link here (thanks to Pissedoffsol) that talks about how to make a JDM motor California legal. That's like a blessing from god considering the JDM B16A's are nearly 700-800 dollars cheaper than the USDM ones. The question is how to get it to work and how to get it to work right. I'm going to use same-year or newer (92-93 Engine, 92-93 Integra Shell/Civic Shell ideally) This part I'm confused about: Okay so what OBD is this engine: B16A XSi 92-93 I need to get a P30? How do I get that, and is that the thing that goes under the carpet on the passenger side of the car? If I get a P30 ECU, how do I keep it OBD1 or rather change the OBD to 1 and use the P30 ECU? I'm planning on using a CARB Legal US spec aftermarket intake/exhaust manifold, since it'd be cheaper/easier than finding an OEM Del Sol Vtec manifold set up. Will I need one of those? If so, what's the wa of making an engine OBD1 without using a jumper? I know that if the XSi engine is OBD1 that means I can probably get away as long as I just get the P30 ECU.