I have mega 475 delay box and I use the spool function or stage 5 as the starting line enhancer.
Intermittently it will not go on the step 5 and go to launch rpm even tho the delay box is set correctly. I have tried two different delay boxes.
Is this a software issue?

Doesn't the mega box provide ground and not power might need to check wiring for the Grid?

quote:

Originally posted by Blake4128:
Doesn't the mega box provide ground and not power might need to check wiring for the Grid?

The 475 outputs are all +12 volts.

The PB inputs are all Ground except for the Line Lock PB which is +12 volts.

In Grid, IGNITION TIMING STEP RETARD 5 tab, what is the Engine RPM programed to?