I'm running the 20144 with stock filter and D and D exhaust - plenty of popping on decel. Will be downloading a tune R34ME perfected based on 20050_2 for the D and Ds - when I eventually can get a friggin day off
Gary, take a look at the sec table - you're gonna want to change that for sure if you want full power in all gears. Also Wayne's speedo correction might be something you want to consider. Alternatively, try tune 20050_2 and make changes from there
These are just suggestions without knowing your bike or setup - please do not take this as sound advice. I'm sure the knowledgable gurus will be along shortly