I have read lots about 156 air box mods and am wondering what the funnel is for that sits in the pipe inside the air box.To me this looks like it could restrict the air flow?Iknow this would not greatly improve performance, but maybe the throttle responce on the sluggish selespeed my be improved.has anybody tried this?
I don't know what the 'snorkel' thing is for but it looks like it would reduce air flow.
I have removed mine and made some changes to the air box intake. I can't say if there is any better throttle response but I'm planning to get an Autodelta chip and hope that will improve things.
As part of the Auto Delta induction kit, they recommend removing the funnel.
This is what I did, but can't comment on what effect it had as I also replaced the 1st part of the intake.
What I can say is that if you replace the standard filter was a K&N replacement type filter (i.e. same size / shape as original) then this does improve throttle response.