i'm basically stock in the hp area-maybe 350-360 rw, and i have yet to find z owners who upgrade to 450-500 rwhp and have any real traction
i think that is one of the big "downsides ' of adding so much power to the Z if you street drive it alot..
what good is additional hp if you can't get the car to stick,it seems to me its a 'dimishing return as far as $, cost , power and traction-but to each his own..i am very interested in seeing how the c6 Z will do after about 10k mi on it and if the tires can hold the 500 hp..
i think i lost about 20-30 hp when my F1's were toast..and now with new ones on-its like the car got a "boost " again in the hp dept..

hp is great,but if no traction,you could have 50hp over me and still 0-60 could be a close race/. :z: