Ecumaster forum

I have a emu installed in my Nissan skyline on a turbocharged 1uzfe engine which I am having problems with the ecu voltage fluctuating
iv just fitted Honda k20 coils in favour of the twin distributor setup and have noticed the problem, im not 100% sure if it was there before fitting the coils but I don't think it was
battery voltage is stable as is the 12v feed to the ecu

any ideas what the problem could be?

Post up a log or a screenshot of the behavior you're describing and tell us exactly how the ECU is grounded (which wires go where, etc.).

file posted
sure all earths are to engine block with sensor ground going to ecu
will check soon

all earths go to engine block, any other ideas?

Did you have also an bigger ground connection from the grond point at the engineblock to ground at battery?