On a 08 Street Glide with Rhinehart true duals with a stage 1 download can I bolt the HD heavy breather with out having anything else done to it?

 

Yes. The stage-1 download should cover it.

 

I had a Stage 1 download with slip-ons an a SE ac, was not impressed. Recommend a fuel tuner.

 

You'll be much happier with the performance with a fuel tuner. JR

 

May just have to look into the fuel tuner then....thanx

 

XIEDS's should be added at minimum. or try to locate a used V&H Fuel pak and run both together. It will run well and all you need unless you are going to do any engine mods

 

There is nothing else you Need to do to it, but you might be underwhelmed with the outcome...a bit warm too.

Here is a good overview of different choices of what to do with the EFI when installing free flow intake & exhaust-

https://www.hdforums.com/forum/ignit...uning-etc.html

 

I have both on my bike and it runs great/cool(my performance mods are in my signature). I don't plan on any other performance mods so I don't see the need for a tuner.