WOT high rpm limp mode

[eats]

I'm currently chasing a limp mode issue. It only happens on wide open throttle with high rpm. The vehicle is a Gen F Senator with a lsx 454, vcm 16 cam, a Wippel 2.9l front intake blower, 3 bar map sensor and 102mm throttle. Trans has been built with a 3000rpm stall converter and 1200hp fuel pumps fitted from vcm. It drives perfect at 3/4 throttle any ideas would be greatly appreciated

[jimmyblue]

I'd start with looking at raw TPS voltage, go over the top and
the trans will start short shifting and so on (because TPS is a
prime index for shifting behavior and TPS shows as not being
trustworthy if out of range). Stay under 4.7V to be safe, 10
seconds above 4.75V will set a TPS high code but any time it
is over 4.75 it will baby the trans just for safety.