Tell me something I don't know. I used PSP 3K MHU (CFW enabler 3.60) and my brother used PSP 2K GEN B 5.50 to play GT multiplayer race. We used the same car, same default controls and settings and same parts yet whenever we race, my car would accelerate faster than my brother's. Whats the deal? We would accelerate at the same time, yet while mine reached 70KPH, he would be just hitting 60. We didnt tinker with the gear ratio or any of that, and used the car as soon as bought from the dealers. The other thing is, back when we both had m33 5.00-6 Soul calibur would not lag during ad hoc but eversince he changed to GEN B, ad hoc started to lag (soul cali) Is it the CFW my brother uses or something else? I know MHU is essentially m33 just updated but is GEN somehow makin the games run slower? My GT would load faster than his too and we both run it off ISOs.