Dynamometer Results & Comparisons - What happened

well heres my dyno results disapointed because the guy who owned it before showed me dyno sheets of 371hp well it didnt do that. also does anyone think i have valve float. my mods are cam 222/222 .566/.566 lsa 112, headers, full exhaust, lid , underdrive pulleys and 17x10 zr1 rims(fyi he dynoed 371 with weld draglites and same mods which some people seem to think thats were i lost my power using the zr1)
http://i59.photobucket.com/albums/g289/jd17825/scan0002.jpg

also i have comp cams springs

Does anyone think i have valve float or what do you think happened to my power

Is it an m6 or a4? I dynoed 358 locked with similar mods. As far as performance goes I killed a 2000 z28 making 383 hp to the wheels.

Those heavy ass wheels will cost a lot of power compared to a lightweight drag setup. 30 hp sounds like a lot though...

I have a m6