For an '11 road glide ultra, one year back I had the stage 1 done on her, chisel extreme air intake, screamin eagle street cannons, and the download. I kept the stock headers... The cannons are way too quiet so I'm looking to put something louder on and swap the headers.
Dealers have been giving me mixed answers, If I throw on some v&h dresser duals head pipes, do I need to get another download, or can I throw them on with my existing download?
Much appreciated

 

The download was most likely minimal at best. If you change out the header
and go with a free flowing muffler you would be better served to spend the money on a tuner. Fuel Moto has a variety of tuners and great maps to go with them. More air in and out needs more fuel.

 

X2.......fuel moto power vision is what I did. But who's to say?

 

Yep, new download. And run cooler and pick up 3-5hp anyway.

 

Yes as others have said you will need to re-map, but you should save the money from the dealers download and put it toward a tuner. JMO

 

Ok cool thanks for the info.. Next season I was gonna drop the $$ on some new cams and do the tuner then... Guess I'll wait till then to swap the headers and for now just go with some rineharts to quench the need for the louder pipes.