ukdmegg5

Cars a 1999 civic ej9(1.4) with a b18c4 swap(uk's version of gsr) and has itr pistons/rods, skunk 2 valvtrain, tuners series stage 1 cams and skunk2 intake manifold. I am using a p72 ecu obviously wit a obd2b-obd1 jumper and the harness is a ek4 or si over here. Car starts fine but when i try and rev it as soon as it reaches around 3-4k it cuts out and almost seems like it overfuelling as i checked the plugs and they are very black. Its throwing a cel code for the iat but i tried a new one and its still on and also last night the primary o2 sensor started throwing a code. Any ideas peeps