Down that Australian Spyder Ryders page there is a very interesting section about the ambient air pressure and temperature sensor... apparently it is an easy miss by the dealer during set-up and it really effects the milage and gas smell issues.  I have included it below.   Have any of you found this to be the case on your ryde??
Tim
Ambient air temp and pressure sensor not  installed?  This seems to relate only to Spyders assembled by  Gold Coast Seadoo 
 In  a recent post on Can Am Talk.com ," Beemerboy"  says - "Do you smell a lot of gas fumes? poor gas milage? Dash air temp  gauge read a lot higher than it is outside, and climbs real high in  traffic? rough running in traffic? I sure did and fouled two spark plugs  in 1200 miles. A 1 minute inspection needs to be done. Go to your bike  right now, stand in front of, and looking at the hood, look into the  front small air intake hole on left side, do you see a 10MM headed bolt  holding a sensor or just a open slot? If not, your dealer did not unwrap  the AAPTS (ambient air pressure and temp sensor) from around the frame  and laying right on your coolant over flow bottle. This needed to be  done when the trunk was installed at the dealer. He fixed his and now  says "My bike went from 30mpg to over 40 , temp  gauge seems accurate compared to bank sign temp, no more gas smell!  Really smoothed out every thing, Easy low rpm control. SMOOTH SMOOTH  SMOOTH"
 In a post on Spydertalk.com,
  (
http://www.spydertalk.com/forums/index.php?showtopic=8302)  Tharkun#409 has pointed out that a few owners have learned that the  AAPTS (ambient air pressure and temp sensor) was not installed during  the PDI (product delivery)
 When I (Martin) fitted my Evoluzione  swaybar I discovered that mine also was never installed! It makes sense  as my ambient air  temperature reading was always miles too high. 
You  can see it here cable tied to my frame as it came from the factory .
  It should be fitted with a foam cover as  below. If the AAPTS has been installed, you will be able to confirm it  by looking at the lower air inlet below the headlight on the right side  of your Spyder -right side when on the bike, left side facing the bike -  if all you see is an empty mounting point (like below but without the  sensor) then it has not been done.
          The piece of foam that is intended to protect  the tip of the sensor, the bolt and plastic nut that secures the senor  to the Spyder are all included in the PDI kit which is shipped in the  storage compartment. 
         The foam cap can be seen in the PDI kit on the  right. Not sure where this is now! 
       Be aware and check yours.