Nobody touches cam timing, though. Or do they?
Those motors love compression.
I honestly can't say. I've yet to see anyone get much out of the cams worth writing about, but I could be wrong. The valves are pretty close to interference stock, so it's limited. There are a few mystical cams made by a friend of a friends tuner that eek out power, but I never see anything concrete, or repeatable. I haven't seen too many extravagant builds that bump compression, most people just stroke it to 2.3, and sometimes 2.7L, and slap some ITB's on it. Those motors pump out 300whp+ which is pretty nice considering. I just boost the damn thing and still come out ahead of the N/A guys.
There is a ivtec f20-22 right now. Supposedly it makes good power. The guy isn't talking right now because of a magazine deal, so I hope he's not just talking garbage.