ok so i cant find the oringinal ECU for the F20 im dropping in, right now i just been purchasin parts that i can replace as of now. Recently i ordered an oil pump, water pump, alternator, few gaskets for a 92 prelude si cuz i was told that it will fit just about anythin from a h22a will fit except for internals like pistons, and cams. reason being that i want my engine to be very reliable when i start cruisin with it. Now when i bought the engine it didn't came with the ECU so ive read books for honda swaps and it showed that the p28 and p13 are great for tuning and chiping. Now my question is how do you tune a ECU? How do you chip?Or wat chip is it? Do i need to get an AEM engine management system or is it something else? Also theirs these places like regulate auto performance and redlinemotorsports in my city i have not gone due to freakin college killing my time but do i just go up to them and just tell them "hey can you tune it for an F20B"?