[Spartacus]

Yo

The gas quality is typically 91 and I get ethanol free when possible. Always use motorex 10w50 full syn I have not synced throttle bodies and have 20,000 miles on bike...may be time to do that.
If I knew the bike would pick up 10 hp + then might be worth it to install rott stage 3 but then a power commander would be necessary or a tuner. I’m sure there would be some midrange gain but not sure how much

looking at the numbers again my bike actually makes + 2 HP over the motohooligan setup with dyno tune, same dyno

You will not see a marked difference if anything at all with the Rotty set up. Don't know the reason for the disrespect on the stock airbox? Unless you have a flowbench to actually test stuff you shouldn't be spreading misinformation. Short velocity stacks only help raise the peak HP to a higher RPM number .... doesn't promise actually raising HP.
PS: this was my specialty - airflow


Get one of these and then we'll talk ... warning there is a steep learning curve.

https://superflow.com/wp-content/uploads/2019/08/Flowbenches-2019.pdf

 

[Spartacus]

Airbox tuning is in itself quite an undertaking. The factory has forgotten more than we will ever know on the subject of their own engines. There is a well known brit who takes his Rott airbox equipped SDR to a dyno ... look it up on youtube. He was disappointed for the amount he spent ... the dyno guys knew their stuff however and did a few tweaks to gain some ponies for him. Which would have been done anyway.
We have had this discussion before on plenty of threads here. Boils down to this: modern engines have no more room for shade-tree mechanic improvements. V.E. Volumetric efficiency is so high that any "improving" usually hurts the power band somewhere else or harms overall, the exception is mapping.

Little known fact is that if you look at a dyno chart there is without exception a torque/HP cross-over at 5250 RPM give or take a couple hundred. Torque wins below 5250, HP takes over after 5250 ... always. There is in every case a trade-off between HP and torque ... RPM can and does solve this but street engines do not turn that fast (yet).