Originally Posted by silvia tech

I would go purchase several cans of Carb cleaner and Check for Vacuum Leaks. Are you Running a Stock MAF if you are running the Z32 Maf Check to see if the Wiring Was done correctly If wired inncorrectly the ECM Would release retarded amounts of fuel. Next To check the TPS you will have three wires Black, Green with a Red Strip, and White. unplug the Pigtail and check for continuity between Black wire and Ground. Second Turn Key on Engine off (ACC. Position) Check Refrence voltage on White wire should be 5 Volts. Lastly plug the Pigtail Back into the Sensor and backprobe the Green with a Red Stripe wire Key on Engine of you should be at 0.45 V (V=Volts). After That I would Test your FPR (Fuel Pressure Regulator). However I have Seen very few FPR's Fail. Any other questions Give me a call I will be more than happy to come take a look at it.