on the Nissan Ecu. People like Ashe came a long several years later and discovered there was nothing special about the JWT ecu . So he removes the 155mph speed limiter and the raises the rev limit. Big deal. When was the last time you drove faster than 155mph? And above 7000 rpm, your engine is losing power. For the basic stage III chip he removes 5 degrees of timing in the boost maps. That's it. His primary and 5th gear map are identical. Which negates the safety issue Nissan built into the ecu.
