Modifying the stock airbox - Kawasaki Vulcan Forum : Vulcan Forums
 
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post #1 of 3 (permalink) Old 07-09-2012, 08:17 PM Thread Starter
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Modifying the stock airbox

Have a question for all you mechanical incline folks out there. I was thinking of waterjetting a cool design in the left cover of the airbox where the filter is. Not only would it look cool it would get more air I would think. My question is if I cut a designed into like the circle part of the cover would that keep the k and n filter from sealing inside there. Thanks for the info in advance!

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post #2 of 3 (permalink) Old 07-09-2012, 09:08 PM
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It will NOT cause a sealing problem qith the filter.

Back in June 2011 during the first dyno session with my Vaquero i completely cut out the smaller circular area of the emblem on the left side air box lid and LOST 5 h.p. due to the air "choking" as it tried to pass thru the connector channel between the 2 air boxes. During the dyno run i could feel the air coming OUT of the hole due to intake reversion. I did a couple of runs to make sure of the accuracy, and sure enuff there was a MAJOR loss of power. I then did 3 more runs, first run taping off 1/3 of the hole, power went up, 2nd run taping off 2/3 of the hole, power came up again but still below the best run with an un-cut a/box lid. then the 3rd run with the hole completly taped shut, power back to stock.

If you are gonna cut a design into that area the back side of the air box lid would have to be sealed so no air can go thru the design you have cut .I have done this on skoots before and glued chrome or carbon fibre pattern material on the inside, you can even use a piece of material in a color to contrast and compliment your skoot.

The extra air that a replacement k&n filter supplies to the engine does not cause the air to "choke", if you want more air thus more power it will have to be accomplished with a Big Air Kit.

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post #3 of 3 (permalink) Old 07-09-2012, 09:13 PM Thread Starter
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thanks

Thanks ray thats the info I was looking for. So that will not be happening now! I reckon I am not looking for more power just better mpg with a map in the pcv. I was thinking that adding more air might help that problem.

2010 Voyager
Scootworks 2 inch fat risers
vance&Hines slipons
Mustang Wide Touring studded
PCV
Michelin commander 2
Ipod adapter
Titanium header wrap
8 to 12.5 inch bagger windshield
Iso grips with Rays throttle mod
Chrome rear floor board covers
Kams Kit
new kawi rider is offline  
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