well i installed my s300 on a p74 ecu. my car is a 95 dx hatch. it came stock with a/c and i took it off when i did my ls swap. on SManager theres an option to activate launch control with the a/c switch. the problem is i press the a/c swithc and it lights up but the lauch control dosent work. if i swithch it to the brake switch it works. has anybody ran into this problem and how you fixed it.