It seems that FMF was wrong with their Dynochart ! First their was this link http://www.fmfracing.com/04%20YFZ450_dyno.jpg with with max of about 37 HP modified, while Yamaha was talking about 45-50 HP stock. Now it seems they made a new chart without HP scale http://www.fmfracing.com/04%20YFZ450_NEWdyno.jpg

Very interesting, a DynoChart without scale !!! Very nice to be the first with an aftermarket pipe, but please you're cheating us, and making yourself ridicules FMF !

Can someone post a real Dyno of the stock 450 ???

 

I've found it's representative of FMFs products - not real relaible [img]i/expressions/face-icon-small-shocked.gif[/img]

 

They do tend to stretch the truth a little.[img]i/expressions/face-icon-small-wink.gif[/img]

 

A little my rear end.[img]i/expressions/face-icon-small-mad.gif[/img] Ahhh don't get me started on FMF.[img]i/expressions/face-icon-small-disgusted.gif[/img]