Expert help please.... i did a turbo swap 83zx turbo in a76z body . this engine ran great before the swap. the problem i have now is when i push the throttle quickly the engine wants to stall & sputter but the engine idles great. the only changes i made when i put the engine in the 76z was a new t3t4 turbo,intercooler,manual boost controler,fuel cell,hks blow off valve(venting in the atmosphere)and air fuel ratio gauge. on the air fuel ratio gauge it is showing lean when i press the throttle quickly(red lights)narrow band. no i didnt check the fuel pressure because the fuel pressure regulator was working fine before the swap. i richen the air flow meter,change the timing ,engine still ran the same. i was thinking of buying the Vortec Engine Management Unit 12:1 from summit $150 bucks do you guys think that this will solve my problem? Need Help PLEASE.....abe280z