Sifu's,
I'm in the middle of rebuilding my engine. The head is totally kong already so I got new valves, lifters, gaskets,etc etc....now I'm upgrading to Gti cams inlet and exhaust. Any inputs on what I would...
Does anyone know how to install a 4-wire o2 sensor for vr4 200? My old one uses single wire & it's not functioning properly anymore, so I bought a 4-wire sensor ie. includes heating element and ground.