hello everyone! i really don't have that much knowledge when i comes to ecu's anyway, my car is a '00 si, with b18c5 motor, si tranny, itr clutch, itr flywheel, headers, exhaust, short ram intake and a pct ecu.. pretty much stock.. and i am planning to get a p28 ecu.. just want to know what to look for before i buy an ecu (manual vs auto, vtec, or sohc vs dohc).. so please help me.. will my car run better if i have a p28 ecu vs the pct ecu that im using right now? please advice.. thank you! your help is greatly appreciated!