I liked to know if fit H.A.C of Summit of Ski-doo in my 96 Ext 580, i think yes. If yes, I have to drill holes in my airbox?? If not, which economic system can make the same work.

I ride at 100-200 meters at my home and 750-850 meters at my chalet.
With going temperatures of -25 Celcius to 0 Celcius

Get a tempaflow from Holtzman engineering. Work great if you install per instructions. If you can't find one locally, you can order from Royal Distributing. I ran one for 2 seasons in my 9 and loved it. 9er
http://www.off-road.com/snowmobile/reviews/2003/tempaflow/
http://www.royaldistributing.com/

And I think of my idea is possible but do you think that it is necessary to drill holes as Tempa Flow ??? :dazed: The Tempa Flow is $220 Can and a Used H.A.C is less expensive! :D

P.S : 94zr580, if you read my topic of send a pic of your Tempa Flow , if you can, Please