Not sure, but from what I was told. It's best to use the correct dist. for the ecu that you are using. (EX ecu with EX dist and non-vtec ecu with non-vtec dist.)Not sure but, maybe true. I have a 96 lx, I used my cousins ex ecu and the car seems to be missfiring or somthing. For sure that the engine wasn't running right though. See what other folk say. <_<