I just got a 240sx from Projekt nice car but revs out at 5500. he said the ecu was chipped and im not sure how to unchip it or if i even want to mess with it since its my daily. anyone out there who could explain it to me or just do it for me real quick since im sure its simple would be very much appreciated.

 

does anyone have a clue or maybe a 5-speed ecu for a 95 240sx i know this cant be hard just dont want to break anything.

 

Does it has a daughterboard in it? Why don't you take some pictures of the chip job and someone can tell you how to go about it.