Matthew, If you will look on the web site, I have pictures and info as to where to start and how to adjust. My car is right on the money, and real simple. When the car is hot or normal operating temperature, place the 3mm allen wrench in the hole till you feel it rest in the head of the cap screw, Now. Don't take it out till your through adjusting. With the car idling, turn the wrench counter clock till the car begins to trimble or start starving for gas, you will feel the motor as I said start to tremble. Then turn it 1/4 turn clock and the tremble should go away. That's it. Call or email if I can help further John hervey http://www.specialtauto.com/fuelsystems.shtml