28-09-17, 06:48 AM
(27-09-17, 04:46 PM)Hedgetrimmer link Wrote: [quote author=Falcon 269 link=topic=23324.msg268859#msg268859 date=1506521833]
Altering the air box lid requires the intake stubs to be gas-flowed as well in order to gain the best results:
http://www.yamahafz1oa.com/forum/showthr...+boot+mods
Having gone back to non-gas-flowed inlet stubs, can't say I noticed any actual difference on the road, so not necessary.
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But that is YOUR opinion. I really don't think Ivan would have included it as part of the upgrade if it actually makes no difference and I'm sure Mike would sooner not spend the 20 minutes of so actually doing it.