when i start the car, the moitor revs up to 1500 till it gets warm, after that, itll drop to 750 and when i hit the headliughts, the lumpy idle will occur. anyone know whats the proiblem? btw its a h22 EG, with chipped p28 ecu. ive cleaned the IAC, and tightened the MAP sensor and TPS sensor, set the idle control on the TB at max. oh for the vacuum lines, i just had them plugged up. can this be the source? or is it my ecu thats the problem?

 

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