The choice is yours ultimately. ... the HD tuner will cost you $400-$500...then you will need a dyno tune for $300 +.... the FP3 will cost around $300... run a canned map recommended by V/H and run it.... if it's good... your done... if you want fine tuning... autotune it.. no dyno needed... I have had both. I love my FP3 cuz I like to tinker... HD tuners need a dyno to tuneim very interested in seeing your video. the dealership told me that they are having alot of trouble tuning the dresser duals on the 2014 and 2015 SG's. this could be because they dont (or wont) use the FP3. they seem to only want to sell the harley tuner or the power commander. i had them order the power duals because they told me about the difficulty tuning the dressers. im wondering if i should order the FP3 instead of using the H-D tuner.