not a bit. smokes a bit at start up but thats it. its only smoked a few time pulling a trailer with a heavy load. not that im looking for a smoke show i just figured it would smoke a little.id expect some black smoke if they are ad injectors,i know when i had stage ones with stock tune the truck smoked pretty good
Maybe you had stage 2s.i drove my truck for two weeks with stage ones and stock tune and it smoked and hit 25 psi boost.when i got the chip it would run exactly like stock aa injectors with no smoke and about 15 psi boost in the stock setting.it doesnt make any sense to me because as long as nozzle size has remained the same and the tune has remained the same you should get the same amount of fuel i would think.