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M5lp 1204 15 1986 Ford Mustang Timing
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When tuning with XFI (or any other higher-end, aftermarket engine-management system), syncing actual timing with XFI's timing values is critical. XFI 2.0 has a new Fixed Timing Test Mode function within its Operational Parameters section. Using this feature is as easy as clicking on a check box and setting the value to 15 degrees.
