i decided to take the cheap way out and bought one of those "mugen" chips from ebay, yeah i know mugen dont make those, anyway, do those chip programs actually change the program of the ecu to read differently. Since some call it "reprogramming" the ecu and others just add a chip. Is there a difference or is it just different terminology. Also by putting one of these chips in will my vtec, fuel maps, and redline actually chnge or did i just get raped.? replies from experience or knowledge please, not bias. thanks