idle no stable…throttle cable change,winter

hi,i have RZR XP 900 2013 6000 kilos throttle cable change then used my Snow plow to open and suddenly he was no longer no stable idle rpm I looked at that seemed to me 1250 1300 laps I tried disconnecting the air hose idle and not long after he returned to normal I reconnected and removed the pipes the air box of and I was able to go the garage.

sorry for my english