Software upgrade on a standard S2 ABY

Hi,

My wish to turn my S2 ABY into an RS2 is taking forever to get the parts I need.

I am tired of waiting for more power so I am going to do a software upgrade on my S2 until I can get the parts to do the full RS2 upgrade.

Who do you think are the top three people/companies that have off the shelf software upgrades available for the S2.

MTM is one company who offered me software. These guys did a fine job on upgrading the software on my B7 A4 2.0T so they are one company I am already looking at.

At the same time I replace the software would it help if I fitted a 3 bar map sensor and replace the injectors with RS2 440cc.

orsum