JDM 3 Stage VTEC & USDM y8 engine harness! what a mess???

We may earn a small commission from affiliate links and paid advertisements. Terms

Komet 163

New Member
hello everyone

does anyone know what are the emission sensors used by the D15B 3 stage VTEC engine (JDM engine)

im doing a swap in my OBD-0 crx and I need to know what the sensors that engine uses, since I will use a y8 engine harness. and that harness doesn't bring all the connections for the sensors that the D15B 3stage uses

I have read that the D15B 3stage uses EVAP in the United States, but I don't know if in Japan this engine uses EVAP

I have no problems with the emission laws, I just need to know what the sensors are necessary for the engine to work properly

will be all the sensors in the photo or just some


for example my D15B 3 stage does not bring that piece held in the hand


neither has this piece marked in red circle


I don't know if it is necessary to use the fuel pressure sensor or not

I don't know if it is necessary to use all the EVAP sensors or not

example: someone who tells me, "for the correct operation of the d15b 3 stage vtec, you need the egr, the egr lift sensor & none of the evap sensors", or something like that

please someone help me...thanks