Honda 2024, 2025, 2026 CBR650R / CB650 Mail-in Tune / Tuning

Dyno Proven results.   All tunes are developed in-house on our Mobile Dynojet Dyno.

Our final combination:

Sprint Air Filter
CS Racing Full Exhaust
HPR Tune

I have a tune for every combination here.  HPR's stock 2025 CBR650R started out at 80whp and showed extreme consistency across about 20 dyno runs before modifications began. 

STOCK:  Tune / Sprint Air Filter will gain you about 3whp.  You'll notice better throttle response, more overall power under the curve, and an overall more enjoyable riding experience.  For those who have or want to keep the stock exhaust system 

MODIFIED:  Tune / Air Filter / Exhaust showed a gain of ~ 6whp, a gain of 7.5% overall in rear wheel horsepower.

AFRs and Timing have been optimized for both configurations for both power and safety

This is a mail-in service.  You will need to remove your ECM and send it to us.  Turn around time is 1 day from receiving your ECM.

If you purchase the STOCK tune, there will be no additional upcharge down the road should you find yourself needing the Modified Tune other than shipping.

If you are local to us in North Idaho, we will include a dyno run and printout at no additional charge!

Other changes included with general tuning:  Rev Limiter increased to 13,500.  Pair Valve Code turned off (optional), o2 Sensor code turned off (optional but really only needed for 2 sensor bikes; generally not for USA bikes).

ECMS are to be shipped to the following address: 

Hersh Performance & Racing
11370 N Government Way
Hayden, ID 83835


FUEL TYPE:  91 octane minimum
We found no additional gains to be had on higher octane fuel or further ignition timing modifications