Nail Bender...Thanks for the info. Why can't I run the same gauge pre as post? Doesn't the pre gauge run up to 1500? Why wouldn't this also work for post? I want pre and post because the trailer I intend to pull weighs 16K, or there abouts. We need to be able to run coast to coast, but intend to concentrate mostly in the Western US. Everything from Rockies to Salt Flats. I want to know what is happening on the road, then know when the turbo is cool enough when we shut down for the day to shut off the engine. I am leaning towards 2 seperate gauges, or one single gauge with a DPDT switch. The dual gauges are neat, but they just look too crowded and confusing for quick glances while driving to me. Besides, if I go with 2 seperate pyros, and a boost, I can fill a 3-gauge pillar mount!!!