March 14, 201511 yr Has anyone fitted a S3 head and low compression insert to a 2012 290 , and what difference did it make to the fueling , mine seems too rich and bogging down. Any comments would be appreciated.
March 14, 201511 yr Hi S3 Head works fine, all i did was change the Pilot jet from 48= 45, main jet down 1 size, was a bit rich when fitted the head now its great Wakka
March 16, 201511 yr Author Thanks , I'm finding its bogging from the bottom when you give it a some ,
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