Recently I returned from afghanistan and had dropped my 2003 Z off at UpRev in austin. While there they said the knock sensor went bad so they replaced.

Well...about 200miles later I was driving and cylinder 3's ignition coil went bad. So I instantly stopped, let it cool down and swapped it with a new one.
The next day I was driving and within 30miles it went again, so I got it towed to the shop. Well, He tested for shorts and found one associated witht he minor harness and rewrapped everything and bamn no code...

Now the knock sensor went bad.
I am currently frustrated but trying to be resilient. I have the Momentum GT35R kit on it. Im not sure what the issue is. please ask questions to get more details

 

Did they replace the Knock sensor harness along with the sensor? Its more likely the harness then the sensor. They are known to go bad, mine did.

You can get just the short harness from Z1, http://www.z1motorsports.com/350_g35...oducts_id=3189
That is the full harness, call them and they will sell you just the knock sensor part of it. It is a pain to change, lower intake has to come off.

Good luck, hope that helps.
Thank you for your service to our country.