Air Filter options. GT 250A

[daxman]

1) New intake to filter box rubber - approx 40 quid delivered
2)2 x Foam pod filters - 25 quid
3) Wintergreen wash of old rubber and some self-amalgamating tape
to help things along - I've got these things..

Thoughts?

Cheers

James

[sportston]

Option 1.All day long!
Option 2 will be a pain in the bum to set up the carbs and you will lose some power on top end
Option 3 won't last. I've tried similar on my car and after a few weeks the tape splits.

[daxman]

Thanks - I know that pods are a poor option on CV carbs but wondered if they worked better with slides, if not then Option 1 it is.. (as always the list gets longer!)

[Craig380]

My 10p worth - try and stick with the factory airbox, it will save you a lot of time in fiddling with jetting.

[sportston]

Thanks - I know that pods are a poor option on CV carbs but wondered if they worked better with slides, if not then Option 1 it is.. (as always the list gets longer!)

No matter what type of carbs you have, pod filters will need different jetting. Your best bet is nearly always to use the stock airbox. The larger airbox will smooth out the induction pulses enough to make a noticeable difference to engine performance. If you look at top-level modern race bikes they nearly all have large, or larger than normal, airboxes. Power delivery will be smoother and you will have a broader torque band.
Pod filters will help increase mid-range, but you lose some power at the bottom and the top ends of the range.

[Indy650]

The stock box with the carbs vented to the box is the best option IMO. Pod filters can work good though. Stay away from the short K&N style filters though they rob power. You do have to adjust your carbs with pod filters but to me thats not really a downside it only takes a half hour or so on a nice day. Of course riding in the rain can be problematic with pods unless you use outerwears and filter oil spray.