astevenson101

Hi, I was recently troubleshooting some things on my 4th gen prelude I recently got a JDM h22a dropped into it with all new internals and the engine was bore'd and a chipped and tuned ecu, well I seem to be having a problem with my D4 light flashing it went off at one point then came back on after I had turned the car on again it runs fine, the idle is perfect, and its not shifting hard when its in D4, although it is having a problem accelerating at the rate it should be. When I put it in first,second, and third it accelerates fine. Was wondering if anyone could give me any insight on this issue.