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Crankshaft position sensoer is on the right down side of the Crankshaft Pulley.

To advance the ignition to 14 degrees on '99. It's a matter to trick the ECU. How?, Repositioning the Crankshaft Position Sensor more upward. CPS is on the right down side of the Crankshaft Pulley. First, disconnect the CPS connector, remove the undercover, then remove the CPS bolt. Once out of the car proceed to enlarge the hole (bottom side) of the CPS bolt in order to get the upward reposition. Use portable Dremer to cut off ("bore") about 2-2.5mm from the integrated washer in the mentioned hole. Finally, install back the CPS having condider the following: Air gap between Pulley Plate teeths & CPS (Spec: 0.5-1.5 mm) and tightening torque of CPS bolt is 69.5-95.4 in-lbf. Past Specs were taken from the Miata'99 Workshop Manual.

After complete the installation. Use Timing light to check new timing. It should now oscillate between 14-16 degrees at idle instead of the factory oscillating 9-11 degrees."

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Q: Where is the crankshaft position sensor located on the 1999 Mazda miata?
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