The gain is about 45 RWHP and 45 RWTQ with pulley and EuroCharged tune. Here is the dyno of a C32 from their page (same motor):
http://www.eurocharged.com/media/cat...ef72b04f_1.jpgLooking




Also, looks like you can order the Euroflash cable and tune right from Amazon for $399 now! Flash the tune with your own laptop... so easy!
https://www.amazon.com/Eurocharged-E.../dp/B01AAS3P8K