I have a highlander with a 912s, 500hrs TT.
Started having problem with engine running rough on one mag(module)and on cold start dead on that mag untill abt 3min warm up then works but rough compaired to opposite mag, about 100 rpm def on mag test at 4K.
I have a bully hawk soft start module installed and when disconnected I have the same problem.
Bully hawk people said it might be the module pickup coil is not set right.
Has anyone adjusted these pickups and can give me heads up on difficulty?
plugs have been gapped and all show good color.