Hi Jon,what about the fuel pressure pid does it alter on acceleration?also what about the air flow response when the throttle is actuated?Why not carry out an acceration test and see the reaction response wise from the O2^s and the fuel pressure and air flow.
Hi,
Landroverman has given you a good test to do. I also would connect a secondary on the bank you think
is faulty one. Have a go and post some data, and all will have a better idea.
speck