ok cool, did u have any turbo whistle with just your snorkle & standard airbox?
Hmm... i wondering if removing the standard airbox would give you enough room to mount a second battery in there...
I also am keen to put a K&N air box in as I have had the standard one out before when I fitted my snorkal and it looks like there's room for a dual Batt system.
And also Plazamaman has now got the hot pipe for the 2012+ Spain D40s available on eBay which I will be purchasing very soon