Yo people i asked a question about TC and SC and all that stuff b4 but i cant get that shit, i only 15 and parents dont want it to be fast. But all i can do is an engine swap and then when im 16 ill get a job and get some NOS. But im wondering if u would put a ZC or B16A1 in a 91 honda civic hatch DX???? and would u get ZEX NOS? cause ive heard it is the safest. and what all can i get with the ZC or B16A to add major HP???? sorry 1 more question...................does a VTEC controller help at all? some1 told me they dont help at all and another person said they really do help.............laterz