Hi, guys. So, I now know that I should use an air filter or 2. Cheers.

On to my next, related, post...

I've got some big plans for my scoot, including the intake mod., as follows. Firstly, tho, you should know a few other bits I'm gonna do.

Single seat conversion.
Remove rear mudguard (fender)
Install hugger (for legal purposes)
Remove airbox.
Relocate battery.

Intake mod.

As we all know, cold air contains more oxygen than warm air for a given volume so directly behind the engine probably isn't the best place for an air filter. My plan is to relocate the filter/s behind the seat. I figure I could use a single, large filter and suspend it transversely between the frame behind the seat in a custom bracket/cover thingy and then run a hose from there, under the seat to attach to the intake manifolds.
Alternatively, if I didn't want to go the custom cover route, something like

K&N 'Apollo':
http://www.knfilters.com/universal/apollo.htm

Green 'Twister':
http://www.greenfilters.co.uk/Green_Filt...2ab926aaf0f3310

mounted in the same place might do.

All comments/queries/relevant information welcomed.

Neill