Every racer's toolbox should have an MSD Ignition Tester. This handy tool allows you to check the entire ignition system while it is in the car! Once the ignition tests good, you can continue troubleshooting and find the culprit. MSD has offered an Ignition Tester for several years and for 2000 has upgraded it with a microprocessor and several other new features. The Tester produces a simulated trigger signal that fires the ignition just as if the engine were running. A special, load producing clip-on spark plug is included to connect to the coil wire. If the spark is unable to jump the gap of the tester, there is an ignition problem and you can trace it down. For racers with our new Programmable 7 Ignition Control that are using the Individual Cylinder Management system, the Digital Tester has a circuit to check the operation of the Cam Sync signal too. The Tester has an LCD display that clearly shows the simulated rpm. This also allows you to test the accuracy of any rpm limits, rpm activated switches, shift light operation and your tachometer. The Tester operates on 4, 6 or 8-cylinder engines and will simulate up to 10,000 rpm.