I had a custom map made for my S4R yesterday (PCIII,arrow full system, FBF airbox mod). The green line is with the FBF map that came on the powercommander, the blue is with the custom map. It appears to have resulted in a 5hp gain at top end, although I dont know whats up with the miles per hour horizontal coordinate, I'm used to seeing rpms there....any ideas ? Before you say, "something is wrong 107 rwhp is too low for an S4R with a full system",remember I am at 5280ft elevation. Dyno guy said they see 10-15% hp drop due to elevationt. That is consistent with what I saw when I had my Hornet 919 remapped. I will pull the map off the powercomander tonight and would be happy to email it to anyone that would like to try it with their PCIII. Just give me a PM.