What would be a good plug for a NSR12S5? Hot or cold? And a good brand? I'm used to using a O'donnell standard plug, but have no real clue with this turbo thing...

I'm also in the middle of tuning the engine. I think I have quite a bit to go to lean it out. It barely temps at 200 F. I know it has to get warmer than that. It seems to bog right around the mid range before picking back up, so I'm sure I have to tighhten the low end up a little more. It does have a strange habit of shutting off right around 1/4 tank, though. Not sure about that. Unfortunately, it's usually 1/2 way across the track so I can't get a good read on the temp when it dies. 90% of the time it fires right back up.