Being slower in a faster car would be frustrating, however these fellow Rennlisters are right, you will get faster!
Putting the power down, carrying speed and braking are the key to fast lap times. I love my GT3 and now after many, many track days continue to push it to the limit and my lap times are now, for the most part, as fast as they can be without further mod's (more money).
Take Care.

 

So this is a European 996 GT3 RS ? You never made that clear.