03-28-2023, 02:09 PM
It spins a heavy roller of a known weight so it can calculate the power from that force / time.
Normally most shops stick a ‘sniffer’ in the tailpipe to measure air fuel ratio, and another sensor clamp over a spark plug wire to get the RPM.
For anyone with a power commander installed- you can plug the dyno into it and get your RPM direct from the bikes ecu/can bus… which is much better than the clamps which are always fussy.
And if you have the Dynojet auto tune box like I do- you can also ‘see/use’ it’s wide band o2 data for your air fuel curve instead of the tailpipe sniffer.
Should be more accurate for both readings this way- it’s the same exact data the bike is running.
And if you look at the screenshot, I’ve chosen to look at the injector duty cycle for each cylinder to see how close I am to maxing them out since I am making 25% more power than stock so far. I’ve never bothered to look up their flow rate- so someone (max / popgun?) might already have an idea of what they can support.
Im viewing, and tuning, cyl 1-2 separate from 3-4.
Also keeping an eye on engine temp so I can try to be consistent.
You can pick all sorts of stuff to show- throttle position, what gear, manifold absolute pressure.
Once I get done playing with some stuff- different plugs, different air filters, air box stuff- I’ll follow Mark’s lead and tune each gear independently as well.
Sent from my iPhone using Tapatalk
Normally most shops stick a ‘sniffer’ in the tailpipe to measure air fuel ratio, and another sensor clamp over a spark plug wire to get the RPM.
For anyone with a power commander installed- you can plug the dyno into it and get your RPM direct from the bikes ecu/can bus… which is much better than the clamps which are always fussy.
And if you have the Dynojet auto tune box like I do- you can also ‘see/use’ it’s wide band o2 data for your air fuel curve instead of the tailpipe sniffer.
Should be more accurate for both readings this way- it’s the same exact data the bike is running.
And if you look at the screenshot, I’ve chosen to look at the injector duty cycle for each cylinder to see how close I am to maxing them out since I am making 25% more power than stock so far. I’ve never bothered to look up their flow rate- so someone (max / popgun?) might already have an idea of what they can support.
Im viewing, and tuning, cyl 1-2 separate from 3-4.
Also keeping an eye on engine temp so I can try to be consistent.
You can pick all sorts of stuff to show- throttle position, what gear, manifold absolute pressure.
Once I get done playing with some stuff- different plugs, different air filters, air box stuff- I’ll follow Mark’s lead and tune each gear independently as well.
Sent from my iPhone using Tapatalk