I recently put a clutch kit, and slip on muffler (Yoshimira Polaris) on my 2012 xp4. Immediately afterwords, it started overheating. It seems fine fan kicking on right when it should (199 to 200) then after about 10 minutes the fan starts, and only runs for around 20 seconds, then shuts down. This causes a gradual overheating situation, running up to 235, with the fans kicking on intermittently,running for around 20 seconds then shutting down. As a trail fix, I pulled the relay, put some 20 amp fuses in it to make the fans run constantly, and it runs at 183-186, never getting hotter. I have swapped relays and had the same effect. Coolant is full, nothing else was changed, and immediately before the muffler/clutch kit, it was perfect. Any ideas?