although I haven't one.
Any suggestions for cheap or free upgrades for the 954 RR?
Is it worth removing the pare valves or messing with the intake flapper valve or is a Power Commander the only real improvement?
All opinions are welcome
It all really comes down to your riding style, how the ergos feel to you, and what you're doing with the machine. My next few words probably won't be the most popular with some members, but here goes;
1. Suspension set-up is ideal and KEY with just about any machine. Whether your intent is to decrease your laptimes or just absorb the bumps in the road better, dialing in your machine's suspension for your weight, riding style, and road conditions is appropriately labeled "#1".
2. Ride height. A near "free" adjustment of seat height can greatly increase the level of rider comfort by lowering the back of the bike and taking pressure off your hands & wrists. Many riders frown upon this adjustment which is usually labeled as "lowering", because it change the way the machine handles and looks. Some feel as though sportbikes should be in their purest form and operated at capacity. I say it's YOURS, and make it as comfortable to ride as you can.
3. "Dirtbike bars". Usually involves drilling a pair of holes in your top Tripletree clamp and incorporating putting motocross style bars (like stunt guys use). This is a bit more involved and time-consuming modification that requires longer cables & lines as well. The purpose is the same as #2
, to have a more "upright" comfortable riding position.
4. A more "aggressive" drive. No, not smashing side-view mirrors of cagers on their cellphones while drinking Starbucks and steering with their knee... I'm talking about replacing your chain & sprockets (all 3 at the same time with NEW). Many, many sportbike owners enjoy a -1/+2 set-up. I prefer my -1/+5, but obviously my fuel economy suffers.
Now, for your original question, as far as the intake flapper, PAIR valve, servo motor and HTEV, I'd leave them in place while they're still functioning properly. Once they fail (which may be the servo motor first: MIL codes 34/35), I recommend deleting it ALL, and installing a "Servo Buddy" to extinguish the MIL.
Other "small" things to remember are; keeping the OEM paper air filter, change oil at recommended intervals, ensuring intake & exhaust valves are within recommended tolerances, I believe there's even a "hotter" or "colder" sparkplug the Service Manual mentions (since you'll have it out while checking the valves).
Personally, I think the designer of the 954 "knocked it outta the park". I have performed a couple of the aforementioned "modifications" and adjustments out of necessity, to increase my comfort and due to mechanical failure. I hope this post was informative & helpful.