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Hi all DIYers@zth

4-5 months ago, i did some searching and finally found a guide to make this.
(Buying a Bee-R launch was out of budget.....)
My purpose was to make a DIY Launch Controller ... however since the rpm signal is adjustable,
you can trigger a 12v relay for any purpose...from cutting ignition, fuel, on sub injector, on mivec, on horn, on central locking system and etc at what ever rpm you want.

example....
Set rpm adjustment to 6000rpm, once reach 8000= horn sound...or...