that cough is typically an injector hanging up momentarily...
not all that uncommon on a low-mile truck...
happened on my 05 4 or 5 times , although once or twice it was at normal temp when it happened...
also, my MPG is up about 2 since adding the Juice module 16-17 over the weekend, 12-15 on prior trips
Dan now you need the predator so you can turn off the rev limiter..