i have a L1 ecu ( i think) and i opened it up to find this,
its a collins board,
what is it? is it just a replacement board needed to run a different chip?
or something else?

and the chip had the sticker sating 403s, 3bar and comp. but no number,
what comp housing would ytou normally run with greys and a 3bar? .63?

i would ring collins but they are shut and im inpatient. lol