Which wideband and where?
 

I'm looking to put a wideband on my 99' 4Runner Limited (5vz-fe) since I think my front O2 sensor has gone bad. I'm planning to go boosted in the near future, so I'll need a wideband anywys.

Can I replace my stock O2 sensor with an aftermarket wideband? Will the computer read it ok? If so, which one should I go with? I don't mind if I need to cut the connector off the old (stock) O2 and solder it onto the wideband.

as far as I know .. no .. wide band is an "added" feature to stock . you will still need the stock o2's to satisfy the computer


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Update.

I have Califorina emissions (2 cat converters) so I think mine are actually A/F sensors (i.e. wideband) as opposed to the old style O2 sensors.

I guess there's no reason to go after market then if I already have widebands on there?

http://www.innovatemotorsports.com/r...B_Shootout.pdf

If youre still looking, this might help you

Yeah, you're going to have to replace the stock sensor.
The Innovate will help you when you go boosted to accurately monitor everything.
I would not recommend wiring a gauge to the stock sensors. Leave them alone and just get the Innovate kit and keep it stand alone.