HomemadeTurbo - DIY Turbo Forum

You NEED a wideband controller...thats the point of the wideband. In a stock configuration, the controller is obviously internal to the ECU...

I am going to guess that as long as its 5 wire that sensor is a WB.

As far as a pinout, look on the plug to figure out the manufacturer and go from there.

Most likely a Bosch LSU4 or one of the NTK units (L1h1, L2h2)

Quote:

Originally Posted by Answer

Something I thought about last night...

Knowing that wideband O2 sensors have a linear 0-5v output, and knowing the A/F ratio vs voltage, could we just use a digital multimeter and aim for a voltage instead of aiming for an A/F ratio? This would simply require a WB O2 sensor and a multimeter, no need for WB controllers and such... (A/F Ratio being 2*Voltage +10)

This could be a nice alternative for home tuning? (don't know if this has already been discussed)