I don't believe this was mentioned yet but the simplest problem may be the easiest solution- you using premium gas?
If your car is a manual then it could anything stated above.
Other than that it could be a vacuum hose, i used to drive an eclipse and my accel and rpms were off due to the vac hose.
Last edited by Tribalpinoy91; 12-15-2012 at 12:44 PM.
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