Originally posted by mtber
GO TUNE IT!
Make sure you changed your oil at 50 miles ? 
Change your oil again at 300 or 500 and go have it tuned.
Breaking on a motor is pretty much crap. Once its been through a couple of heat cycles & a few miles of driving it is broken in.
A lot of people have their own methods.
I had to push start my ls/vtec b/c my starter was dead... I drove it down the block turned around let it idle for 20 min...
I drove it for 20 min... let it get to normal temps then I hit vtec a few times (7k). Came home, let it cool for few hours, drove some more...
Next day, change oil, drove some more and at about 150 miles I was driving it like a champ
i just hope i put down the same times you put down