So, I got a call from Fairfield Nissan saying its running but not very well. I reminded them to adjust the timing 15deg advanced. The service manager didn't want to listen. I guess you know the customer doesn't know what best, kind of thinking oh his part. Then he tried it and BAM! running good again. He called me back and said "wow that made a big differance". When I picked it up i made sure to test drive it first to make sure it was running good and sure enouph it was ok. I appologized to the manager for being a prick on the phone and he understood. He wasn't told by his staff what was going on and his staff wasn't listening to what I was trying to tell them. The manager also appologized to me for not being informed when he became informed of the issue and not listening to what I was telling them. Long story short, DON'T TAKE YOUR Z TO NISSAN OF FAIRFIELD!! They don't know Z and don't listen to you.