Hi all, i just bought a 17 fxdls and wanted opinions about which setup would be the best for me. I just changed my stock exhaust for a bassani road rage 2/1 and i noticed a few backfires when i downshift in too high revs. First of all i got a picture of my spark plug to know if i can still run it like this or i must either take it to the dealer so they can set ot up for me or buy a fuel pack or any other ones.

I dont ride a lot, 2000km per year and i dont plan into changing any engine parts or any other upgrades.



thanks

 

With the full exhaust install it is now running lean and needs to be tuned to correct the issue.

 

Plug reading appears to be lean.