stuttering fzs 600

[red98]

thanks fazerrider for confirming the ecu set up,i was pretty sure but nice to have a second opinion,standard downpipes and can,no non standard parts on the bike its as it left the factory,iam going for another test ride this afternoon as not up the outlaws now    which also gives me time to check the output of the tps,iam happy that ive found something wrong that explains the fault,upto now everthing ive checked has been ok , after 40,000 miles i was expecting to find something...well done yamaha....loads of advice/tips in your last post,which i thank you for,most helpful.....will up date tonight ,i think iam getting close to solving this one