:dong: 25 years ago, I have ever tested d same thing made by a tv repairer friend; he told that he got tis circuit idea from a popular rotary webpage. It had d rough cut feelings, but I quite happy fitted it in my old 12A carburator engine with contact points during those days.
........when putting it into today modern engine is a different thing. When cut the injector signals, could hear some engine knocks. When cutting d ignition spark, it caused fuel overflowed and check light came on too. After several trials, I ended up with ignition signals failure inside my ECU and had to get an entire new unit… ‘ F’.
:dong: So friend, it is worth buying the properly designed launch control unit for your specific engine. If u are serious in tis, pl try to get d suitable products with much appreciation of their lot of R & D time spent by the power builder experts!
:proud::dong: My advice to tis diy kit is - Do not expect too high from it. Just use it for play-play should ok, if u not mind those above-mentioned side effects to d engine.