2007 C50 low idle/stall
 

New to the motorcycle lifestyle. Last year I bought a 2007 C50, mostly stock with the exception of the previous owner removed baffles on stock pipes. I just recently replaced stock pipes with cobra streetrod slashdowns and added a cobra FI2000R fuel manager. Since then, I have noticed the bike seems to be idling rough and has stalled twice along with the red oil pressure light coming on. Could this be a result of my mods, or maybe something else. I recently changed the oil and flushed and replaced coolant. The bake has 12,400 miles on it.
Thanks.