My curiosity got the best of me this summer. I was wondering how the fuel metering was set on my truck. Not that I expected to have any issues, but maybe if it was trimmed conservatively I could dial it up a little!
I chose the IssPro Pyrometer with the colored gauge and 270* sweep, to complement the movement and style of the stock gauges. Installation is very straight forward with no surprises. My truck is 24v, but with the added capacity of the inverter, I hooked this accessory to my 12v source, thus grouping my added accessories on one circuit, and leaving the factory wiring intact.
The illumination lamps are 2watt, 24v with green prophylactics, hooked to the rheostat function on the dash illumination lights.
I installed the probe where it was convinient, in the exhaust down pipe. My thought is that if I ever do something to add a charged air system, I can tap the manifold at that time.
Results......
The fuel trim is spot on as is. About once a month I have a need to go to the city via pavement road. If I drive hard on a looong uphill with my foot stuffed in it (not my style), the temps will raise up and up and up into the red. I was very pleased to see I have not been starving the motor, nor abusing it with too much fuel.
I can now safely adjust the fuel for the purpose of testing for a seat-of-the-pants power difference running it leaner or richer. This testing is not a priority, however I am interested to learn the real world differences in adjusting the fuel for power. Surely I am not the only forum member who dreams of building a chassis dyno???
Rick