hey iam new here and wanted to ask if anyone has used diesel performance plus injectors. they are 900 dollars for the stage 2s.but iam not sure if they are a good product. i have a 97 f250,so far i have downpipe 5in exh. and a tony wildman 4 pos.chip.but going to do lots more upgrades. if you know anything about these injectors it would really help.i dont want to waste my money.thanks