Originally Posted by dug-e-fresh
my jdm ej207 had an easier time passing emissions than my usdm ej205. jdm swaps are no harder to tune than anything else.
he might be referring to the older phase I turbo motors and maybe earlier phase II ones like v5/6 ..not much tuning for them.
id go with a newer JDM swap if i was gonna do that stuff
usdm is good enough for most though.