Dyno of a Z06 with a new headers and oil change
 

http://lgmotorsports.com/gallery/alb...line%20oil.JPG

492.2 rwhp 472.3 rwtq

The other realization is the fact that when everyone gets LS-7 edit tuning software the bar will again be raised. how much, without going into the engine? I don't know. Of course the usual mods like cam and porting the heads, ported throttle bodies, cold air intakes etc will reap many advances.

http://forums.corvetteforum.com/show...2&forum_id=100

from the ls2 files ive seen they are very detuned from the factory..but the 06 pcm is different from the 05...similar to the 98 fbody situation where its completely different from the 99+ pcms