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Holes drilled in airbox side cover???

3456 Views 17 Replies 8 Participants Last post by  tecdady
Hey, I noticed a few people had some holes drilled in the sides of their airbox for motard/street use? Just wondering if this is a common mod and if it actually flows a bit better air????
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On a dyno, we found that this made almost 2 hp for the ktms (12, 1" holes).
yup, perfect. Nice cow motif btw.

Spent some more time on the dyno last night and found that with the engine work done to my bike the stock air filter/airbox is a big restriction. Now I've got to design something around it.
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