It turns out the tune I had was causing all the issues - the clowns here in south Florida don't know what they're doing. Allen, thanks for rescuing me. The truck is running really well now - one data log revealed hitting 103kpa at only 26% throttle I was able to actually drive my truck down the road this evening, I can't wait to see what this thing does after the tune is really dialed in. Thanks again, Allen, we'll be in touch.