Yes it is....there is mugen Street ecu which rev to 8600rpm and Mugen N1 which rev to 9200rpm...Both of the Vtec change over at 5200rpm...race team usually use the 8600rpm one for long race and N1 for short race......They are generally about 1k-1.2k 2nd hand........about 1.8k brand new.....not sure about the price now since the exhange rate is so bad......in order to install it in audm DC5R you need to bridge a wire to your immoboliser or it won't start......also you will see the little green key light keep flashing....just ignore it........or you can pull the little green plug off behind the steeling wheel.....hope that helps..