Troubleshooting the SFC-VTEC

The unit doesn't turn on even when the ignition key is at theON position.

• Check the harness in the rear of the SFC-VTEC to ensure its connection
• Make sure that the electrotap connection to the ignition is secure.
• You may have grounded the unit to a non-chassis component. Please re-check.
• Make sure your unit is not simply turned off. Press the MODE button to see if it will turn on.
• The main switch on the rear of the SFC-VTEC must be in the ON position.

Although my engine revs up, the unit doesn't displayincreasing RPM's.

• Check the harness in the rear of the SFC-VTEC to ensure its connection
• Make sure that the electrotap connection to the RPM signal wire is secure.
• You may have wired the unit incorrectly. Please re-check with the correct wiring diagram.
• Make sure your unit is not simply turned off. Press the MODE button to see if it will turn on.
• The main switch on the rear of the SFC-VTEC must be in the ON position.

My "Check Engine" lamp comes on.

Scenario One - no "Check Engine" lamp when the unit is OFF, but appears when unit is ON.

• Your sensor line may be switched between positions IN and OUT. Please re-check.

Scenario Two - "Check Engine" lamp appears at all times.

• Check all crimpings, electrotaps, and harnesses to ensure that there is a secure connection.

My engine stalls, and in general, it doesn't feel right.

• Perhaps your fuel settings are too high or too low? Please test out various settings and adjust accordingly. Also, if you drastically adjust the hi-cam switchover point on a relatively stock car, the acceleration will feel awkward.
  
• Are you using spark plugs with the appropriate heat settings? If you ran your car hard on the tracks without using the correct plugs, you may shorten the life of your plugs, and not get the proper performance out of your car.