MicroSquirt.com read only forum (Jan.15,2018)

Hi
I have just been out for the second run in the car with the mega squirt 1 ecu running . It seems to go ok , but have a few issues to dort out . ( Like work out what I am doing before I blow it up etc )
Anyway in cruise , ie no accel or decel , i get a cycling oxygen sensor reading . Have you seen this before ? What have I missed/ got set wrong ?

Its like its trying to correct itself but auto tune is off and I think it may be too much for the ego correction .

Running on a 3.9 rover , ms1 on a v3 board with narrow band oxy sensor .

Cheers

Chris

A narrow band will flick from lean to rich as the ego correction tries to keep it at 14.7 AFR. Typically i see it go from 1/4 to 3/4 on that bar at the bottom of megatune, so i'd say what you're seeing is normal.