Late in this thread but what i"ve noticed in whisper(I have it as a stand alone tune) is that theres definitely some raw fuel coming out the back end...otherwise it doesnt hurt anything for a few mins as said..
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2002 7.3 F250 Supercab Shortbox
DIY intake
CCV dumped
Autometer gauges
WW/ATS 1.0 exhaust housing
Hutch/Harpoon in tank mods/hpX line
AIH delete/ebpv delete
TruCool trans cooler
Straight piped
PHP FU 
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