Hi guys The engine is a B16 1st gen into a 2000 EK Civic HB, stock block and head, RSR exhaust manifold to silencer, top fuel air intake and buddy club cam pulley for precise tuning possibilities. So the engine is stock. But the ecu is the stock ecu from the previous engine D15, it woks fine with no CEL. I know that it's not a good operation, but we have problems to have OBD2a ecu for this car. Since the begining when we drive it in all gears, we have an erratic idle around 2000 rpm with a big shutdown of power. After 2500 rpm the car idle come fine and still work fine. Especially when we drive in mountain, no power until 2500 rpm with erratic idle. :cry2: :cry2: :cry2: We do a compression test, who was pretty fine, try to tune it but no big changes. Seems to be the same. Give advance with the distributor, seems better, but there is no power, i think we are far from the 140 hp we can expect from. So i know that the ecu is a critical component, i want to know if the ecu might be the cause of my problem. If some good infos you have, please let me know.Perhaps i have another issue and you guys have ideas about what can i do to solve it. Thanks guys for your sugestions.