35* to 45* Timing Advance at Idle.... That Right??

[Justins99GSX]

hey again~! Just had a few questions........... Yesterday my brother got his datalogger and today we got to mess around with it................ Here's the question...... While at idle and lower RPM's the TIMA (i think it means timing advance?) reads anywhere between 35* up to 45* and went as low as 19*........ Do i need to adjust the timing again??? I did it according to VFAQ's instructions and have it at 5* BTDC....... Is the 45*-35* timing advance normal for idle and low RPM??? Any help would be much appreciated

Justin

 

[DSM90AWD]

While at idle and lower RPM's the TIMA (i think it means timing advance?) reads anywhere between 35* up to 45* and went as low as 19*........ Do i need to adjust the timing again??? I did it according to VFAQ's instructions and have it at 5* BTDC....... Is the 45*-35* timing advance normal for idle and low RPM???

Completely normal. The stock timing maps in your ECU are based on RPM and airflow. The lower the airflow the higher the effective timing.

Kyle Tarry put together the following GRAPH to illustrate this point.

 

[Justins99GSX]

Thanks again~!