Don't know if this matters, but, are you using the correct final drive gearing also?
3.154 for the AT
3.460 for the MT
I think Toyota have it wrong on their e-brochure.
On another note: Would be interesting to put AT and MT back to back on the same Dyno.
So lets do some math here, THIS IS A LOT OF ASSUMING IN THIS MATH. Lets just go with it for fun.
1100(whp away shop)/900(whp home shop) = 1.2222~
1 - 1.22^-1 = 0.18~
Assuming the 1100whp dyno is more correct in its reading, this dyno is reading 18% lower.
Which we can then go 340(whp on the...
Got my allocation not to long ago.
Begining of this post people got their allocations 2 months ago. So probably just have to wait it out and hope you get lucky.