I have a 07 Ultra Classic that has V&H Ovals, PCIII, and stage 1 A/C. The local Harley dealership dyno tuned my PCIII as part of the purchase price of the bike. I am now thinking of putting on the V&H true duals to get rid of the crossover pipe and reduce the right side heat and better sound. Will this modification require another dyno tune from the dealer?

 

Any change to the air/fuel relationship will necessitate a change in the mappings.

Is it "required"...no. Suggested...yes.

If you look at PowerCommander's site you will find multiple maps for setups with stock vs. dual headers, even it all other components are the same.

 

highly recommended.....you'll actually have a much better tune because now he can do each cylinder individually

 

Thanks for the input.Guess I could try using a canned map first but thebest solution is to have it professionally dyno tuned.

Rick

 

Yep.

Read all about it here:

https://www.hdforums.com/m_1495826/m...tm.htm#1495826