This is interesting. On the Evo X, which is also DBW, there is a 2D table that lets you ramp up the throttle response just like the SprintBooster does. In fact, in stock form, there is quite a bit of throttle input ramping on the Evo X. This must not be the case for the 370Z.
I wonder if such a table that maps throttle input to actual throttle plate movement exists on the 370Z. I'm sure UpRev knows about it if it does.
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'10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake
'08 Evo X - built motor+trans | BB-X @ 32 psi | CH3OH | self-built+tuned - ??? WHP
'01 Galant V6 - built motor | GT35R | self-built+tuned - 550+ WHP (retired) |