350Z HR in NZ

Maybe not. Mine did not throw up an trouble code. They did a re-learn of the exhaust valve timing. They tried this several times but it kept going out of sync. They reckon the faulty fuel dampers caused this to happen. After the dampers were changed they did the re-learn and its been okay since.

I had exactly the same problem when bought my 07 HR a few months ago. I couldnt live with it so took it back to the dealer. In my case they diagnosed the fuel dampers as the fault. There is a fuel damper on each fuel rail. We got some from the US on Ebay, I think they were about 25 USD each and dont take long to install. Mine runs really smooth at low speeds now. It's a lot more enjoyable to drive Dont accept the problem. Give the dampers a go