I have a 09 Busa with the PC-5. I have the yosh full exhaust system R-55. I need a good map. I'm currently using the R77 yosh full exhaust map, but, I don't think I'm getting the best performance.
Should be the same map. the r55 pipe and the r77 has the same flow, the only difference is the length of the can. The r55 makes up for the with what im gonna call the snake of the exhaust pipe under the belly pan. If straightend back out its probley the same total tube length as the r77.
easy way to fix ever needing a new map or custom map is add the autotune to the pc5
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