B18C Swap - emissions?

[Baryndor]

I am in the process of finishing a JDM B18C swap into my 95.

I live in Indiana and there is absolutely no emission checks here. With that said, does anyone know what I can remove from the vehicle with regards to emissions and still have it run properly?

Thanks.

 

[99sidude]

Just the cat. The jdm motors don't have evap, so that is automatically gone. Really though, running no cat is good for maybe 1-2whp, and does nothing else but make your exhaust smell foul. The jdm fuel and timing maps are also more aggressive than usdm ones, hence less air friendly.