Use it. Use an old toothbrush, not the one you use on your teeth please, lol. spray and brush, spray and brush, til it comes clean, should help a lot. Wipe off what excess you can, any you can't will just evaporate or suck through the intake and burn in the engine. Actually I didn't even know they made tbody cleaner, I have always seen it done with spray carb cleaner. Just hold the the throttle open with the air intake removed, no need to remove the throttle body to do this, though I have heard of people that did it that way too.
Rick Kilpatrick, AAS Automotive Systems Tech, Alamance Community College, Class of 99. 06 5 speed manual Mustang with Pony pkg : GT Mac Mufflers, true duals with one custom pipe. 2.5" system. GT bumper cover, all installed March 7&8 2006. AFE Stage 1 CAI, Motoblue Underdrive pulley, GT aluminum shifter knob, honeycomb rear blackout panel,and dash kit installed. Roush hood scoop and side window louvers installed. SS taillight trim has been installed, new alum. GT steering wheel installed.