After 2 months I finally got the USB-TTLmodule...I tought that i will never get it

So i will start my project at the weekend...i want to build a scooter CDI(minarelli), hope it will work. I tried a lot of PIC CDIs, but never get the result i want.
GOmpy do you have some notes for use it with a scooter?
I had problems before with the voltage..if i connected to the scooters alternator it has always restarted... i think because of the alternators messy voltage.