I have a 88 hatch running a b16a out of an JDM integra Xsi because i have the pr3 code all over my engine and have the j1 trans. Im running a stock pr3 ecu right now and I was thinking of running turbo edit to add data logging and so on. I was wondering if i put the TE pr3 rom in a pr4 ecu. If so, what are the draw backs. I dont want to mod my pr3 ecu because they are some what expensive.

 

No. PR3 can only be interchanged with PW0.