RE: I want to upgrade old car...
Well from what i am hearing on here it seems that the nitro star .15 engine i have isnt a very popular one since everyoen told me to change out the engine...i guess there isnt much more power to be had from this engine by upgrading it..I imagine by the time i upgrade to get some decent speed i could just go out and buy a new rs4 evo or something for a few bucks more..