problems with remote car start maxima

You have to troubleshoot before you go trying to fix everything.

Stick a key in the ignition, but leave it in the OFF position...now attempt to remote start.  If it works, you have issues with your transponder bypass.  If it still doesn't work, you have other problems.  That'll get you started on the right track anyway.

Your problem is very simple. Your almost there ..... make sure that you are using a wire gauge smaller than 20 guage ( preferrably 24 gauge ) and you need to wrap the cylinder about 8 times ( not just two ) and wrap the entire key head about 10 - 12 times and then either hot glue the wire to the top of the key or tape it up good.

The problem is that the signal is not getting induced into the Immobilizer properly with only two wraps of the wire on the cylinder. The more wraps the better the induced signal. Try this and post your results.