I can only second Adrians words - i do have the Aero Racing ECU (+ their "insane" upgrade plus plus plus..) in my car - now it´s drivable as never before... BUT:

beware of the beast, it can & WILL bite badly!

+ it helps to have brakes & suspensions all round up to the new job......

It doesn´t matter how fast it becomes, but how it becomes fast. laugh2
drive 2015 Roadster 3.7