So the other day I bought a XBOX 360 elite and a few games, one of which was forza 2. I played for a few days and started buying and modding a lot of cars. I have noticed that on some cars, when you fully modify them, the game will freeze up when you try to race.

Mainly the Porsche 911 T 3.3 with a Porsche 959 AWD engine swap. As soon as you start a race and shift into 2nd gear, the game freezes. Also I fixed up a mustang GT and put the 5.4L supercharged Ford GT engine in it, and it freezes randomly too.

Has anyone else had this problem?

Also, I have been racing online on the nissan track, and it seems that everybody else have cars that will go 250+ mph, when I am stuck at around 243-245mph. I have a C6 Z06 completely modded and I spent about an hour tuning it and all I can get out of it is 243mph. has anyone else had more luck getting more speed out of their cars?