need help doing my swap I'm gonna swap a 94 GSR motor in my 90 integra ls what wire i need and which ecu will fit

 

few ways:

obdI to non-obd harness conversion, + add vtec, knock sensor, secondary (IAB) to your old harness

or

use a PR3/PWO non-obd ecu(plugs up), add the vtec (3x wires), knock to your harness, and get a Skunk2 manifold...becuase b16a ecu do not activate the the second stage of the (dual manifold)...reuse your injectors, add a b16a (1st gen) distributor....and dual 02 sensors....just as if it were a 1st gen b16a

also by going with a skunk2 intake you will gain some power .....