When I bought my bike new, I had the Stage I Air Cleaner Kit, Screamin' Eagle Performance Touring Slip-On Mufflers and the download done.

I'm thinking of maybe going to some slip-ons that would be a little louder. Is the download a one-time thing, or is it done every time the mufflers are changed out? Is the Harley download a generic one-seize-fits-all, or muffler brand and model specific?

Thank you.

 

The HD download is a stage 1 (a/c & exhaust), one size fits all....

And, it's really only slightly better than OEM tune because it's EPA compliant.

If you're gonna be modding the bike and/or changing things around... get yourself a tuner now and do your own download flashing, and probably with much better MAPS than HD EPA compliant tunes.

My preference is a PowerVision from Fuelmoto and you will get support from both Fuelmoto and DynoJet...

Good luck, the modding bug has just hit you!

 

If all you are doing is changing slip-ons, you don't need another download.

 

All the dealer download does is add a bit across the board. It is by no stretch a tune.

It will work with any muffler.

If that is all you want to do, you're fine.

But I am also in the "buy yourself a tuner" camp.

 

It is generic, although they may have an updated one for you, but they are relatively expensive and close to worthless.

Here is an objective overview of the most popular options-

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

 

With new slip-ons you will still be running approx. 14.7 to 1 in closed loop (90% of riding), same as stock. IF you don't want to buy a tuner and get max available the other option would be FL-XiED-10's. It's not as good as a tuner would be but easily removable for service/warranty work. Your warranty is intact with a dealer Stage 1 with AC and pipes but not with a tune. You will run slightly richer and cooler in closed loop. I definitely noticed the heat reduction and lack of decal popping with them installed. Also would idle longer in traffic before the rear cylinder cuts out indicating lower operating TEMPS:

http://sales.nightrider.com/fl-xied-10.html

 

I totally agree, which is why I was hoping that if I only want to change out the mufflers to something a little more aggressive than what I have now, I wouldn't need another one.

I don't want to do anything major at all, so I'm not really interested in a tuner. I'm thinking of something like the Vance and Hines Twin Slash Round Slip-Ons, or similar. Just want something a little throatier.

But this does lead me another question: if I decided that I wanted to change out the entire exhaust, I'm assuming that would change things up a bit, where I would need a new download, correct? Or is an updated download only needed if I wanted to do other modifications?