you can use various calculator and DIY it yourself. The only problem I can think of is finding the exotic components that will make your passive not at bargain price anymore :D
screw the passive for now la,sifu........gonna go active,perhaps when i'm ready to invests in serious SQ shit,i'll go back to passive.......u said u've got a friend for installation.....is it Abg.Yus from Batu Caves??
there will be a genting autocross this sunday......only limit to 10cars for mr2 club.....if any1 like to join please contact evelyn.....check with her if still any slots left or not.......we can do this as a convoy...