Alright i installed a sohc zc in my ef 4dr and its slow as a slug, the only cel im getting is the o2, which is good ive been thru 4 of em and i have even rewired it directly to the ecu out of the harness with the proper insulted wire they use. its slow until the cel comes on then idle smooths out and is faster than my buddys ef si hatchie, we raced with it on and off. off he gets me like 5 cars lengths in about a 1/4-1/3 mile section, when its on i can beat him by 1-2 car lengths ? i dont get it. )=- anyone bueller... ?

 

your origional setup lacks fuel
your ECU is not going open loop at all