Mine went from 63.99 hp to 75.41 and 78.16 to 87.36 tq. I did rush slip ons and pc lll and big sucker. that seems a little low for a stage 1.

 

I agree. The average gains that I've seen for the 96 at Stage 1 are 11.09 HP and 6.39 TQ. I don't believe that any of those numbers were with true duals however.

 

true duals should have a larger HP increase. when they have a special on dyno runs i will have mine checked with the true duals i am running from hooker

 

I believe that yours are commonly referred to as 2 into 2 and not true duals. To my knowledge, when someone refers to true duals they are referring to pipes that exit out on both sides of the bike. Here's a similar set up and dyno result: https://www.hdforums.com/forum/4814693-post108.html

 

new definition
In category theory, a branch of mathematics, duality is a correspondence between properties of a category C and so-called dual properties of the opposite category Cop.

 

If the stock harley pipes on the touring models have a crossover, they wouldn't be called true duals.