Originally Posted by edo
Good thread but I would rely on practical tests more.
My Pbox times and logs show it is best to shift at 6.2-6.4k rpm.
Moreover, it depends on a tune, I believe. Shiv wrote some time ago it was best to shift at 6.2-6.4k rpm as there's more boost after such shift.
Remember what I said in the intial post though...
1. The Torque curve throughout the RPM band with your car. Someone else's curve may not necessarily be the same as yours so their shifting points may be different.
I am only providing a tool for the community to determine their optimal shifting point.
The torque curve on a procede may be different than the torque curve of the GIAC tune so this is why one would need to do use this tool with their curve.
Another example would be comparing my GIAC Race tune with this GIAC stage 1 tune. The shifting points of my race tune is different than the stage 1 tune.