As announced on the Google Ads Developer Blog on May 9th, AdWords is changing Enhanced CPC (ECPC) to further assist you in increasing total conversions. Previously, ECPC automatically raised bids by up to 30% when the system thinks a click is more likely to lead to a conversion. Alternatively, if a click seems less likely to lead to a conversion, bids would be lowered. Google is now removing the 30% bid cap to account for the differences in conversion rates among the audience and location dimensions.