My friends and i just installed a JDM 2nd Gen. B16a engine in my car. I am still using my ls tranny until i find an si or gsr transmission. Oh, im also running on an obd1 gsr ecu. My question is why the vtec engages after 5,000 rpm a lot of the times. I installed a vtec light and noticed that it seldom engages at 4.5. I thought the light was slow, but it turned on just about right on 3 other cars that had it. I've been thinking that it could be the transmission and the longer gear ratios.