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dyno test

895 views 2 replies 2 participants last post by  kt66 
#1 ·
in hot springs at the harley dealer (state hog meet) they were dyno testing bikes. the dyno man got 6 to 8 more horsepower by replacing stock filter with k&n filter . he also recommended cutting holes in backing plate on air breather .

do you think this helps or can he make the dyno test results show what he wants?
 
#2 ·
Sounds about right. Was this John Golden with Rolling Thunder Dyno?
If so, trust him. A far as cutting holes in the stock backing plate, it will help a little but I don't think the gain is worth the effort in doing it.
 
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