and i also played around with the range coefficient setting but like i said the temp matched my thermometer since the first pyrometer reading was off by 500 degrees
Sounds like you're having fun with it. A couple thoughts that may be helpful: I realize the 500 degree difference you saw was just an approximate observation, but 1050 F on a type K should read about 810 F if the instrument was mis-configured for type J (assuming 70 F at the cold junction of the instrument).
Also, if you are comparing with a "temp gun" (infrared pyrometer) on the exhaust manifold, it will read much colder then the exhaust gases inside, with a large temperature lag, plus other inaccuracies associated with infrared surface temp instruments.