My car is currently running on a P28 ecu..i have no knock sensor or 02sensor...when i try to use the H22a computer the car Idles bad and then shuts off..i would like to use the H22 computer and have the VTEC working do i have to get both sensors or would it work with just the knock??

 

you definately need an O2 sensor no matter which ECU you use. and it would be a good idea to use the knock sensor too.