I take it the TTPM is a pressure box?
If the pup is already installed on your truck, just plug in your TTPM, you are now stacked.
Watch your transmission if it is stock, and your EGT's can get up there 1400+ in the extreme mode. I run mine stacked with the Edge EZ on setting 4. I'm in Performance mode right now, 14. 7 mpg. Extreme drank to much fuel, and I couldn't keep my foot out of it.
Mike