What This Is
PerformanceProTune CDIfor YamahaTri-Z 250.
Designed to improve throttle response, usable RPM, and powerwithout killing the motor.
Why It Works
• The OEM timing is very flat and doesn't pull back when on the pipe. This means the mid range and low rpm range has been sacrificed for high RPM performance. This ProTune CDI lets you add an ignition the curve and bring more power in the mid range without risking the high rpm!
• Advancing the stator helps, but too much causes knock. +3 degrees is a good starting place.
• This CDI lets youadvance where it helps and control it where it matters
ProTune Adjustability
Two 5-position switches:
•Left switch:big timing changes (coarse adjustment)
•Right switch:very small timing changes (fine tuning)
Fullyanalog curve— smooth timing, no digital steps, no hard flattening.
What’s Included
✔ ProTune CDI (Tri-Z)
✔ Plug-style wiring
Built & Tested
• Hand built inWichita, Kansas
