I just swapped out my old pyro (isspro 0-1500), for a (isspro 0-1800). The swap is a no brainer, but before at about 65 it read 800 , and about 1375 on the floor. Now it runs 900 at 65 and hotter on the floor. Anyone have a answer for this. It is the EV series, and I did not change the electronic box that the guage runs to, just the guage itself. I appreciate the help.
_Dave
This is runnig empty under the same conditions 30 minutes apart.
_Dave
This is runnig empty under the same conditions 30 minutes apart.