Where do you guys get these WB O2's? Where/how do you plug them into the exhaust? Do they replace the stock O2 or are they in addition to it?

 

For the DIY'er

WWW.DIY-WB.COM

Uses a Honda Sensor, that goes for about $130.
Going the DIY route you can get out for well under $200 including a slick display.

EFI Systems in GA has one that's just now available for $550 including sensor.

You have to add a bung to the exhaust, or go open loop and use the NB mounting. An 18mm anti-fouler makes a good source for the bung, but it takes some hacsaw work to get it to work.

 

Could I shove a WB in the rear tailpipe? I have seen cars on dynos like this.

 

How about these wide band sensors http://interstice.com/~garfield/ http://www.lambdaboy.com/ http://www.fjoinc.com/automotive/products.htm The FJO is nice because you could get it with the RPM read out making it easyer to tune but its $$$ and the EGOR also has narrow-band O2 sensor simulated output for stoich crossing at a decent price.

 

I use a tailpipe probe when a bung ain't available. But the delay is noticeable, when your doing transistional tuning.

N there can be a slight error when using real long cables.

 

Or you can try and learn some electonics, and for $20 put one together yourself.

Try WWW.DIY-WB.COM

Me? it was worth playing around rather then playing $500 for $20 worth of electronics.

If you want to spend money get the good stuff from firms like NTK Bailey or Horiba.

 

The DIY WB works great. I can vouch for that, I went down to Grumpy's and picked a extra board up and then contacted Bruce Roe to get one of his LED PCB boards. Its very slick. I had an extra O2 bung welded in right before my cat and have the wires ran into my door.

Brendan

 

so , you guys are using the WB with a gauge? not computer linked?

 

Yep, its a completely independant setup. I could show you and BuckeyeRoc sometime if you would like. I'm near Lima, OH.


Brendan

 

does it really take 40 seconds for the WB O2 sensor to warm up?? My car is my daily driver, and I dont know if I would want to wait 40 seconds every time I start my car.. Guess it would be best to take it out when not in use, and plug up the bung..

-Mark

 

Between that and 30 seconds (30-40 secs). You can still drive the car before it warms up. A regular old narrow band takes upwards of 3 minutes even with a heated unit.

If I want to check the startup AFR's I turn on the ignition and wait. Then start the engine. Other then that I just start and go.

RBob.

 

humm.. thats strange.. on diy-wb.com, they say you cant start the car before the sensor heats up, otherwise you will do damage to the sensor.

-Mark

 

Haven't seen that statement. Remember that the sensor used is from an OEM application. The owners of those vehicles are not waiting for the sensor either.

What is true is that running the engine without the heater powered up will ruin the sensor. As long as the controller is supplying power to the heater it is all OK.

RBob.