I recently bought a 98 civic ex that originally had a auto transmission. It still has the auto wiring harness and the p2p a84 ecu. I have an extra p2p a12 for the manual ecu but it doesnt plug and play being that the p2p a84 auto ecu uses all four ports vs the p2p a12 manual ecu uses 3 ports. My question is what correct jumper harness do i need to buy to make this work correct. For any experts does it really make a difference changing auto to manual ecu as far as programmed shift points and what not and am i losing power running an auto ecu in a manual car? i swear this fresh y8 i dropped in should have way more power.