so when i put my chip at stock setting and i get in the peddle i see smoke at WOT, but its not black smoke, but like grey. and even when i do have the chip on a tuned setting, usually 80H economy setting. when i step on the peddle i dont get a good black smoke like i see everyone else get. i get like a blackish brown and its not to thick or anything like i see from other trucks. anybody have any ideas?