I'll second that. My break-in method has you drive the car around softly for about 90% of a tank with each cycle. This helps seat everything else on the car in, confirm linkage adjustments, trim it out so it tracks straight, etc etc. It's also far less boring than watching an engine warm up on the test stand, haha. I shut them down by plugging the exhaust or giving the air filter boot a squeeze as opposed to running them out while breaking them in, just to keep them primed and well lubed.

As far as tuning goes, I can't stress this enough: Do NOT try to chase a perfect race tune. Just find one that's good enough but is still on the rich side. You won't have to touch the needles for quite a while, my car goes about six to eight months between adjustments, and the engine will last longer.


See:


[youtube]http://www.youtube.com/watch?v=ma2_CghxiUk[/youtube]