Don't drop your vtec that low it will hurt you more than it helps you. The lowest I've seen on a daily driven car is 4900 and that worked great!!! You should just give it the juice because most races don't last that long. I've beat type-r's with a JDM B16 gen 1 motor and all I have is cai, header, exhaust, cam gears, ACT stage 4 clutch and a 75-shot of ZEX.