Maybe cars that run on crank angle sensor that are tuned on MT/LT-4 have the option to do ignition timing as i have tried it on my civic-r turbo. You can ask around if your car runs on distributor and can lt/mt-4 do the ignition timing.
Itz need for my GTT (Auto), the original one has broken, and i replace with the manual version(Denso map sensor), power cut at every 4k rpm due to this issue, i have found few halfcut but they are not willing to sell...