I've blown three boyers in 4 years. I then used the sparx system and was happy with this. A few months later i saw the trispark but was not convinced. all the advantages to good to be true?
Spoke to a local supplier Trojan (sydney) and they swore by them.
They have a workshop and use trisparks on all there bikes.
Well i got one and shoved it on my bike...If you haven't got one, get one. Bloody incredible change! I went back and got a reggulator-recifier and coils. All trispark. The bike is flawless, i ride without a care.
They are more expensive at $320 aud but they are digital, have no black box and they can run down to 8volts. Boyer need 12volts constant otherwise the bike runs like shit. If your in Australia, Trojan stock trispark parts and know the brand well to tell you what parts you should run.
I love it!