Car running rich with tune?
Using bama 91 tune for my 05 gt for my cai and axleback for a few months now. Noticed that when I walked around the back of the car the other day the tips were covered in black residue. Decided to take my slps off and change the exhaust. When I pulled off the exhaust it was covered in the black stuff it was literally caked on. Noticed car smokes a little upon first start up. Took off throttle body but was completely clean. Problem with car or tune, opinions?