Hi!
The code 27 is an injector control code. This is a generic code for all 6 of the injectors. If you used an OBD 2 scantoool to extract the codes instead of the mil light blinking method, you will get a more specific code. You will get a code p0201- p0206 code. One of the injectors isn't wired right, or there is still a break in the circuit somewhere. With the p code extracted, you will know exactly which cylinders are the problems (p0201=cylinder 1, p0202=cylinder 2, etc...)
The code 43 is a multiple cylinder misfire code. This is most likely brought on by the wiring in the injector being wrong. Once again, if you use an OBD 2 scanner, you will be able to extract the p codes- p0301-p0306, last number corresponding to the misfiring cylinder. This will most likely be the same as the injector that is wired wrong.
Let me know if you need more help!