i just swaped my blown single cam to a 97 ka24de an wen i put it in its burnin fuel quick and when i give it gas it misfires and its fouling my plugs an there was alot of black smoke untill i swaped in new injectors now theres barly any smoke its runnin better it just not runin right like it has massive power idk if the engine was upgraded internaly it was a drift engine and was rebuilt from head to toe but now its running stock stuff and its running weird an wen i unhook maf it runns clean then wen i plug it n all the bs starts