Originally Posted by Zodiac R279

Is your ECU throwing any codes? I know sometimes when there are problems with your sensors the ECU will run in Safe mode so as not to allow you to cause damage to the engine. this will inhibit the performance of the car as well. Try resetting the ECU (disconnect it from the battery for a few minutes and see if that makes a difference. However if there is a problem it may return to safe mode after a while.