How's it going? I recently put a JDM B18C-r into my 1992 civic DX hatch. I am running my stock P06 ECU that I had chipped, converted to VTEC, and set to stock ITR map specs. The problem that I am having is that when I am accelerating hard in third gear, and then shift to 4th, at about 7200 RPM the VTEC cuts out, the car stops pulling hard (as it will without VTEC), and the rev limiter comes on WAY early at 7800 RPM. I don't understand why this is happening, especially since it only happens in 4th and 5th gears (and sometimes at the top of 3rd). When it happens, The CEL comes on, and then the VTEC stops working in all the gears. Another strange thing is that when I shut the car off to check the CEL, it resets itself, even without disconnecting the battery. So there is no way that I can even check the CEL to see what the problem may be. I tried to jump the wire for the CEL with the car running, but it did not flash a code, the light just stayed on. But like I said, the second I turn the car off to get a code it won't throw one, and then the VTEC works in the lower gears again. Everything I think it could be would affect the car all the time, not just in specific gears. I have checked the oil level, and it is right where it should be. I just put in a brand new O2 sensor. What could it be? This car is not that fast without the VTEC kicking hard! Please Help.