Remainder of the caps have arrived today. They'll go in tonight & tested in the car tomorrow.
As I had temporarily only replaced the 2 caps that were leaking, upon closer inspection after re-opening the ECU again I missed the lone 100uF 10v on the upper board which has blown out the bottom of the cap. The leak did not spread & was contained right under it so it was an easy miss on my behalf. Hopefully this cap is the cause to my issue.
If the fully re-capped ECU does not rectify this, I will be draining the old fuel from the tank as I fit the new fuel filter to rule out it being bad fuel. Then refill with some Shell 98 this time around.
Today I also tested a known working AFM & igniter, they can now also be ticked off the list of not being part of the problem.
