Up jetting carb to suit air filter?

[AzzA1990]

My bike needs a new airbox and hose that goes from the airbox to the carb

it works out much cheaper to buy an after-market air filter (Ram-air in particular) how ever i am unsure about up jetting the carb to balance out the air to fuel ratio, is there a rule of thumb amount that i want to start out buy up jetting? how many sizes up should i go? i believe there is a 115 in the carb at the moment

Any help is greatly appreciated! Thanks

[stinkwheel]

Make and model of the bike would be a good start.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[AzzA1990]

[MarJay]

Don't bother. Two strokes don't work well on foam or pod filters. It will never run right unless you run with a standard air box.

However, to change the jetting on a two stroke is relatively easy. You can do a plug chop to tell you if it's running rich or lean etc. Even so, I'd not bother because I bet it wont ever run right on pod or cone filters.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[AzzA1990]