I have the 9r12a crom. I have this unit installed on my 2008 F350 Super Duty. Up till recently I have had consant regen during every drive cycle. MPG not consistant. I just installed a s&b CAI and the regen cycle stopped my mpg's went up I got 18.5 hwy at 65 mph then 16 in city. But the mpg's do not stay consistent. After a tank or so of fuel I am getting 13 city and am luck to get that on hwy. Still better than stock tune. NEVER had a problem with HP and torque gains your product does deliver. Would like to get better than 7 mpg pulling 1400 lb trailer. Just need a tune to work with CAI