What are the ECU upgrade options for 2005 620 Dark?

[The ModFather]

I'm changing over from Remus CF Silp-On's to an Ex-Box and as this system doesnt come with any kind of ECU options I'm wondering what my options are to improve performance via the ECU? Not sure if the Power Commander and Duc ECU upgrades out there support the 620. Anyone do this on a 620?

[teddy037.3]

PCIII works just fine

[Latinbalar]

I went with the Techclusion box.  I was not looking for any big gains. I had cut open the air box and cored the cans, just needed to rich-en up the mix a bit and that,s all the Techclusion box does.