Waveblaster ,mine just never worked correctly on a yamaha . once my boat finally started ,and was running it worked good .but the initial start up there was a bump going from the analog (of the stock yam pulse signal ) to digital signal of the advent cdi. it always had too much advance at the start circuit which would cause my boat not start easy, sometimes it would even kick back on the motor ,also run down the battery with multiple starts attempts in doing so .it was defiantly not confidence inspiring .and if you took on some water in the carbs ,usually left me swimming not starting at all till i took the pump out of the water.now let me say this ,i am speaking only on the t-3 model on a yamaha.i have a buddy i ride with who is running the t-4 on his wdk 1200 (yam based gp 800 cases/electrics)and has had great luck with it .on the t-4 it is lap top programable so the timing curve he is running works great ,eliminating the timing issue in the start circut.let me also mention that on my SXR motor my t-3 rips ,with no issues and great performance ! but after numerous attempts by not only me but another experienced riding partner . neither of us could get it to run properly on the 62t yamaha based motors ,i even i an attempt to get it to work spoke with my engine builder about the issue ,who had also done much more testing than i with the t-3 and had the same results to report. blaster have you ran a t-3 with any success ,because i defiantly don't know it all .i'm just relaying my experience . also if anyone else cares to chime in (because i still own mine) and i would love to hear what i takes to make it work correctly besides removing it ?