Ok literally just finished the DOHC ZC fabrication into my 79 Civic 1200 , Ive Got A Monotech engine harness for a EF SI and a Chopped down EF SI dash harness im going to pretty much use for a stand alone obd0-obd1 engine/dash harness. Plan is to get everything in the car and running (still have to figure out a micro radiator and gas tank situation) - Run the car on obd0 PM7 till all the bugs are worked out then convert to obd1 for tune-ability. I already will be using obd1 injectors without the resistor pack soo after running good doing a obd0 to obd1 jumper harness would be very straight forward my question here is would I see a better gain going from the obd0 to P28 tuned on chrome by a professional or going with a s300 and having it tuned ? also is anyone familiar with a product that communicates with honda obd1 ecu that can get a Canbus signal to a digital dash example : racepak or cd5/cd7 ? im wanting to pump my nutts up and have a swapped digital dash widebody 79 civic, any input is greatly appreciated