guys, i have jdm sir (obd2) and planning to use a jdm (p30 obd1) ecu.
i'm planning to wire it myself. i've seen a lot of conversion diagrams so im asking
if the p30 (jdm) is just the same with p28/p30 (usdm) ecu?

 

P28 is SOHC unless it has been converted and P30 is DOHC.

Check out this site if your looking for any jumper harnesses.

http://rywire.com/store/ecu-jumpers-...b63db93c82a688

 

its already a p30. i'm from the philippines. buying a jumper/ harness is costly.
i want to do it on my own. do you any suggested sites where i can have some instructions?

 

Try HondaSwap.com You may find some good info there, but my guess is to just go search on Google if you don't find anything on HondaSwap. Maybe you could get intouch with a company that wires up jumper harnesses and get them toe-mail you a wiring schematic on how to wire it yourself.