Fecking hell!
Anyway, the JAM ECU..some have run it with TD04 and it has fueled enough for it. Best to get it on the rolling road to see how is it running to be safe thou.
IMO, you will never get the best tune you could from a JAM ECU, as they can not be programmed here. You can attach a piggyback, but well, ermm...whats the purpose of the JAM?
If I bought a Glanza and it had a JAM ECU fitted, I would sell it and buy a stock ECU, fit an E Manage and get it mapped.
It really depends on how far you want to go with the car..if your happy scooting around at 1 bar and the ECU fuels effeciently then great.
If you want a finer tune and push everything from the car you can, get a piggyback, Like E-manage Blue/Ultimate or a standalone...IMO...before I get shot.