I have a 89 crx hf with a zc motor i have 2 different ecus i was just wondering which might be better for it one is a pm6 the other is a pr4 the original zc ecu was burned up so im just trying to get a quick fix and maybe get some hp if possible

 

PM6 maps are closer to PM7 then PR4, they also tend to be more aggressive. If you feel like it I do have PM7 stock program or Mugen PM7 program for the Pm6 ECU ( late 89-91 ECUs only)

 

either one can be chipped with pm7 maps (depending on year), a pg7 from an 88-89 integra is a good choice to