I am looking at a 09 Night Train and wanted to know if I put on V&H Short shots and leave the AC stock- will I be okay? or need to remap?

 

Nope. You will need a high flow AC and a remap or tuner with a full system.

 

put the pipes on and U'll be ok,,
only when U add a high flow air cleaner with pipes do U have to add a F/M of some kind..
search this, its only been talked about 1k times a yr for the last 10 yrs.

 

Alright, I have been told the opposite. Best thing to do is put them and and ride for a while. You will know if it is running good or not.

 

You will need to have the bike tuned for a pipe change like that. sometimes you can get away with out a tune if you use a slip on muffler that has baffles.