I would love to see higher RPM and no top speed limiter AND control over the transmission shifting AND over the lousy responding throttle by wire. A bonus would be control over ignition timing and stable fuel mapping for forced induction. Would love all the reliability of the stock ECU with the ability to "tune" like so many of the other cars out there.
Unfortunately nobody has cracked the Lexus ECU.
If it hasn't happened by now the odds are against it.
