engine

[lt14673]

hi, I have 1990 nissan 300zx twin turbo, I have two problem in my car, I recently, mechanic change all injectors, harness,crank sensor. I notice the car is quieter but when I step on the gas, I feel like something hold the car back. I feel like the fuel get cut off or choke. second question, I change all my struts fronts and backs and bushing,. but when I drive over the bump , the rear suspention react scary like sway side way like a wave, that make me can't drive fast over 55 miles per hours. please help, I have put alot money to this car, this car goes in the shop more than I drive. thank you so much

[worldisgrand]

As far as the rear problem you are having, first check to see if hicas(rear steer) is still hooked up. If its taken out, see if there is a deletion kit installed.