got a 91 hatch that is DPFI and odb0, pulled the motor, have another lil d series in it now but im unclear as to what needs to be accomplished as far as wiring goes, i have heard i need to run all my obdo stuff with the car and i can just run an obd1 ecu for tuning purposes, i have also heard since it is a dpfi can that i need to take out the entire cabin harness and find either an si or hf cabin harness and put that in it's place, i have also heard that as long as i have the obd1 motor harness i will be using and the obd1 ecu that i need nothing, someone clear this up for me, i want someone who has done this to comment, not someone who thinks they know what there doing! i would even be willing to tow the car somewhere to have it done if it can be done RIGHT and in a timely fashion! prefer to do this myself but...if it comes to it im sure i can work something out.