I've got the TPO kit on my 07 695 and had no problems with crosswinds or fueling. That being said... My butt dyno would love to say that it gets the stated performance gains, though my head is more realistic. It seems to run pretty much the same as it did with a mostly open airbox once the fueling was adjusted on both setups.
So a few pros and cons. The cons of the TPO or any pod filters should go first.
Cons - -
1. You lose the fuel recapture of the vent tank system returning unburnt fuel vapors back into the system through the airbox. Whether this translates into any noticeable gas mileage loss is most likely negligible, but then again you are venting unburnt crap into the atmosphere instead of back into the engine. I personally have had issues with the vapors seeming excessive at times when at running temps indicating the possibility of excessive blowback, though my techs have all assured me that I do not actually have that problem.
A few others have mentioned this problem as well, but most people don't seem to notice it. I have imagined ways to reconnect the venting system to the pods, but just haven't actually done it yet.
2. You end up with a breather filter off the back of the crankcase that can drop oil onto the tire if the angle of the front wheel gets too high.
3. The coil remounting kit that TPO provides sucks (i.e. worthless at least on my bike).
4. I have heard tales of the throttle bodies not being well supported with just the Pods rather than the entire airbox structure. This makes them a bit more succeptible to becoming out of whack or damaged, though I've had mine on for about a year now with no problems.
5. If you tend to ride in heavy rain there could be an issue with water being pulled in through the filters if they get soaked. Just how long you would actually have to ride in a hurricane for this to be a problem is not something that I have a desire to test.
6. The Pod filters are LOUD!!
Now for the pros.
1. The Pod filters are LOUD!! But not in the same way as an open airbox is. With an open airbox all of the intake noise is directed upward toward you in an almost annoying way IMHO. With the Pods the sound is a bit throatier and less in your face. When you really open up the throttle it has a viciously nice snarl that complements my exhaust fantastically!
2. You lose the entire airbox structure and have pretty pod filters underneath that look really cool through the frame and when you lift the tank. That also makes room for other cool things like airhorns to make even more noise when needed.
3. The K&N breather filter off the crankcase looks cool when you cannibalize the original breather hose to run it out of the left side of the frame.
For the money it costs I wouldn't recommend doing the TPO thing, though I'm already invested and happy. The bling factor is nice, so If you're set on pods just figure out what intake diameter you have and spend about $200 less on the same K&N's without the "velocity stacks" and you'll end up with the same setup essentially.
