I was wodering.. I have a JDM Gsr swap that came with the car when I bought it but didn't like the ecu. It had a top speed limit of 120. Im guessing cause in Japan its kilometers. But the thing is that I decided to get rid of it and get a usdm gsr ecu that had a higher top speed of 140. The jdm ecu had the vtec kick in at about 5500 but now with the usdm ecu, it kicks in really low, like at 4500. That is really odd because friends of mine with gsr's say that theirs kicks in at about 5400-5500.. But with the usdm ecu, it runs much stronger and wastes more gasss!!! I need to know if it normal for the vtec to kick in that low??! Thnx guys