THe stock fuel map is/was apparently on the rich side of ideal, for safety sake. How it varies with capacitor ageing, I don't know. Overboosting - I think that's a wastegate issue, probably an actuator issue, not the ECU. 
 Mine is running silly rich and I am expecting the fuel pressure to be high, due to the regulator being old. If it is, I will buy an adjustable reg. Also my stock actuator was leaking so I have bought a Kinugawa actuator with 11psi spring, and blocked off the TVSV system, until I see what's happening. Then off to the dyno for adjustment. 
Stock recapped ecu, stock injectors (I think), Hope that helps.
 

I'm not sure you should try "overriding" a problem with a boost controller. What might happen if/when the problem is solved, maybe boost to high heaven, which is a very big number, followed by smoke.
Sort the ECU first.  Thinking about it, you mention overboosting ....hmm that is another thing that needs to be explained /understood before increasing.

Excellent, good to hear, sounds like you have fixed the problem. Thanks for providing all with findings!

twomr2`s
how much for the old broken ecu?
im not joking i will buy it,pm me with details il get some money to you
cheers

 hey mate im probably get the old one recapped for now. and keep it as a spare.