A few months ago I installed the MJS race exhaust; OEM R1 exhaust with gutted cat, race baffles and ceramic coated. At the same time I also installed smog blockoffs, velocity stacks, and removed the EXUP. I had to use one of the online generic maps for gutted exhaust baffles and velocity stacks. It always seemed to be slightly lean so I took it to get dyno tuned today. It was definitely lean in some areas, but also very rich in other areas. Now, it's almost perfect across the range. Anyhow, in the past others have asked about PCIII maps for this exhaust set-up, so if anybody wants to try the map just PM me your email address and I'll get it to you in the next few days.
Bike put out 156/76 at the wheel.
Bike put out 156/76 at the wheel.