First off, this was a job I did for a person I know. Basicly, they aren't very swift


Apparently, after I put the chip in (uberdata), it ran fine until the next day. Then it ran okay until heated up, then hits some phantom 4300rpm rev limiter (where vtec is set at now, hmm). Took out the jumper, ran fine. Now today he's saying it does the phantom rev thing half the time. FLT is disabled, tried multiple burns/chips/UD revisions. Might try crome.

Any ideas? From what I know, the only previous porblem was a faulty o2 sensor heater code. Ecu was fine beforehand, but it is the ecu (worked in my car, my p28 worked fine in his).

Cliffnotes: chipped p28, ran fine till out of sight, developed phantom rev limit @4.3k (FLT disabled)