generally, our cars weigh between 2500 to 2550 i have found. The factory curb weight is like 2461 or something like that. All i know is, that our cars have 140 hp and 138 lbs/ft of torque, whereas my other car, an 88 2nd gen rx-7, weighing in at 2650 with 146 hp and 138 lbs/ft of torque and a full exaust system with no cats would get beat pretty good by my nx2k. So, our cars must be pretty light which gives us a good power to weight ratio.
1992 Nissan NX2000
K&N Cone intake, Bosal Performance muffler and 2.25" cat back