skullracer34
08-14-2010, 09:38 PM
i have a ? on jetting a 05 450r carb on a 400ex stock bore i have a full exaust procom cdi box and a webb cam degreed 7 degrees i have a 48 pilot 190 main and a/f 2-1/2 out needle is set 2 notches down from top it runs strong on top end and mid but when i rev it up and let off it pops and cracks out the exaust i put a 50 pilot in it but it seems a little big any suggestions will be helpfull from you guys that have done this
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