Hey everyone. I'm having the most frustrating problem you could ever have with my z32. I have gone threw everything from the ecu to the ptu to the injectors fuel pump and vacumm hoses. I'm told this is a very common problem but I cant figure it out to save my life. Here is the problem. wheen ever the car acceelerates hard the throttle will completely shut down. However its not leaning out because my wide band is still showing good fuel. Now during regular driving no problems. but if i try to increase speed by simply pressing the gas pedal it will respond but about 3 seconds into the the increase the throttle response dies it comes back about 2 seconds later but the car begings to buck if u try to keep the throttle depressed. Could it be a bad coilpack? How do you check them to see if they are ok. I have checked and cleaned all connectors coilpacks ptu and all injectors. Any help would be great.