hello I have problem with my z. About 4 months ago i ran it out of gas, and it sucked up some stuff, and an injector went bad. I had the injector replaced and it seemed to run fine until I drove it and it warmed up and started running real crappy and very hesitant in lower rpm's and take off. It also sounds different like its getting too much air. When i first start it and go it runs ok, but as soon as the motor warms up fully it looses ALOT of POWER and the more gas you give it the less it moves. I don't know what to do. I changed fuel filter, and it didnt do anything. Any help or ideas of where to start would be greatly appreciated! thanks, brett