The manual one would beat you even wrose.
I also has a Prelude +/-. So, here is the weakness for you.
When it is using +/- mode, it takes longer to shift the gear up compare to shift the gear down.
When it is driving a full auto mode, it doesn't shift until it reads a steady speed. It response like IF it is a FULL one second long.
In other words, when you are driving somewhere that always keep her Prelude shifting, you both would have a good match.
But, keep in mind that Honda runs in high RPM where as Celica is not (well, I am not sure about the new GT-S).
Best wish,
P.S. In the wrst case, here is the trick to win her without modify your Celica. ---Break her engine !!!--- :laugh: