Hey my 06 g35x wouldn't go over 2200 rpm i replaced the maf the ecu the throttle body and the dealership reprogram the ecu and it still wouldn't go over 2200rpm then two weeks later i go in the yard to check on the i started it up and it was running good i drove it and it went over 6000 rpm so now its good what could cause it ?? But vdc slip and engine light is still on

 

If the check engine light is on then the computer is trying to tell you what the problem is. Plug in an OBD2 scanner and see what codes it is throwing. Anytime you disconnect the throttle body you need to perform the throttle closed recalibration steps as shown in the factory service manual. Section engine controls, under general service procedure at the start of the manual.

 

i hooked up a code reader and code came up pcm/ecm connector my not be hook up gud do tht sound bout rite??

 

That sounds like your crank/camshaft position sensor has gone bad. It’ll need replaced.

 

Which error code exactly.