On a stock engine uprated injectors are a good way to waste money. Speak to a tuner and get the ecu and fpr at the same time you get it set up on the rolling road imo can't go wrong with the emb proven over and over to make great figures and you never here of genuine's breaking buy them both new so warranty is covered. Can't go wrong. Running a fcd is too risky unless you have a wideband gauge. Gauge's are very important, I'd defo go for a map asap