Recently purchased Vance and Hines Monster Rounds for my 2006 Harley CVO Ultra and wonder whether adding the fuelpak is necessary. V&H sends a flyer about the fuelpak and ssys it adjusts the air/fuel mixture automatically for better performance. I wonder if it is necessary to add the fuelpak.

Thanks for your help.

 

When adding exhaust, tuner is not needed. May want to add XIED's. They are easy to install, inexpensive and work.