06/19/2026
Just sharing what I managed to tune out of a completely stock 2025 CBR650R eClutch. The breakup on the high RPMS is due to the bike being mad about the front tire not rotating. Going to discuss with hardware manufacture about possibly being able to disable the safety features during dyno.
Bike consistently laid down about 80whp on many different runs in 100% stock form.
Tune-only managed to get about 2.3whp additional. Sprint Filter got me up to about 2.6whp. For comparison, this is about 20-25whp out of a modern day N/A car.
Bike definitely a bit more peppy and alive. Nothing to really write home about but all gears definitely feel more torquey.
Ran the graph through AI because I'm terrible at photo editing so ignore the obvious lazy addons
My CS Racing exhaust shows up this week so I will be running the data on that as well.
Most gains came from fueling adjustments. Bike runs fairly rich full throttle. Leaning it out gave the most gains. I found 0 gains from adding spark at WOT. More spark during light throttle gave a bigger effect and more throttle response.
If you are local to me in North Idaho and would like your bike tuned, feel free to reach out.
