I did some experiments on open roads today to find out about my shift point at WOT. I was wondering if every GS may have a little difference in tranny shift points.

I turned to POWER mode and turned off VSC then floored it. These were my shift points for my GS4:

1st - 2nd 5200 rpm tires chirped a little at take off and gear shift
2nd - 3rd 6100 rmp
3rd - 4th 6100 rpm
4th - 5th 6100 rpm and pushing 100 mph

I have 2800 stall TC, TRD LSD with 245/35/20 Nitto's. Anyone did the same experiment? What are your shift points?

holy crap your tires chirp from 2nd-3rd? thats amazing that your tranny mods produce this.My 2nd-3rd is so soft.I would love to hear my tires chirp

Sorry, my bad. The tires chirp only happened at take off and from 1st to 2nd gear shift. 2nd to 3rd is smooth.