I just read an article in the March issue of American Iron Magazine installing a Stage 1 Ness Big Sucker on a bone stock 2008 Street Glide.
It says: "Since 2008 and later bikes have O2 sensors in their exhaust header pipes, the stock EFI ECM module adapts this air cleaner change. That means we and you will not have to do any EFI map changes after this install."
Any thoughts on this?
The end result was 73.52 hp and 84.96 tq.

 

I installed an SE A/C on a bud's 08 road glide and he runs different pipes and he has no tuner. We threw on some of those IED's and he hasn't had any issues so far. I told him to keep checking his plugs and keep an eye on things.