Hmm..when my best friend picked up his 03 RSX-s the sales lady told him to drive his new RSX-s like he did any other car. But not to use cruse control for 500-1000 miles. She said there was no "break in" period. Hell they dont even suggest you put synthetic oil in till at least 10k, and you dont change the oil for 5k. I think that in and of itself says a lot about the engine. Just beat on it like you would other wise.