748 Mpg drop
 

I recently fitted some carbon airtubes and thus changed the airfilter to a JHP over the bell mouth type.

I have subsequently found that I am getting a lot less to the gallon, is this correct? Or am i imagining things, as i used to get 120mpg per tank before the reserve light came on, now i am getting around 105mpg.

spunds like your it riding properly now......:lol:

does anything need chnaging, ie mixture, because you have more air? maybe related....

Or it could be the opposite, and the improved filter is now giving you a rich mixture hence the lower MPG???

I don't know...:cool:

sounds like you need a power commander and a dyno run for it

i know my 853 needs it but i dont have the cash for it just yet