Ineed help with bypassing key decoder module.
Sometime car wont start and if i wait 5 min, it starts like nothing happen.
I know its the lock or key[8D]

 

I used to have the same problem.

The problem is, mine was already bypassed. Strange thing is, suddenly it started working no problem.

Anyway, there's an article:
http://www.thirdgen.org/vats

In my 92 Z28 there was an orange wire leading from the lock down the steering column, to a black clip. There's a number of ways to do it, but I think the easiest is to cut the orange wire a few inches above the clip, take off the orange sheath, strip the two smaller wires you'll find inside, and solder a resistor (with the same resistance as the one in your key) between the two wires.

Ask if you need more details.