Wideband AFR Install Help

What is lambda? I'm using torque pro but i get an afr off the O2 sensors

 

Basicly same, but show differet parametr. doesn't say afr, it says how many CO2 in our exhaust.
i will try torque pro today

 

Have you got taken out signal from OEM front (wideband) lambda sensors? Or would it mess up the signal for the ECU? It would be an easy AFR gauge install if that's possible.

Or where do you weld the bung(s)?

 

Lambda is 14.7:1 AFR.

Here are my manifolds with the bungs welded in. I took the manifolds off myself and drilled the holes where I wanted them. Then took them to a muffler shop and had them weld the bungs on. The pic may be a little too close up to get a good reference, but the bungs are right before the catalytic converters.

 

So when i checked mine i had 3 parameters
most of the time 1.0 (14.7)
Sometimes 0.8 (rich)
and 1.2 (lean)
am i right?

 

Yes. Take lambda multiply it by 14.7 and the result is your AFR.

0.8 lambda = 11.7:1 AFR
1.0 lambda = 14.7:1 AFR
1.2 lambda = 17.6:1 AFR

Just know that if you're getting the readings through a scan tool, the ECU is getting its data from the factory AFR sensors. The factory sensors have a limited range. They're only capable of reading roughly .767 to 1.233.
If you're pegging it in either direction, it's likely much richer than .767 or much leaner than 1.233. This is why a wideband O2 is needed. They can measure a much wider range than the factory sensors.

 

im still waiting for my speedhut gauge((
BTW, as i remember O2 sensor usually installs in to catalitic. yeserday i found that my afr sensors placed in a perfect spot front of catalitic...

 

What O2 sensor did you order?

 

Here is a handy conversion chart I keep on file.

 

same as you sent me
speedhut.com
GL-AFWB-09
2-1/16" Standalone Air/Fuel Wideband O2 gauge 8.5-18

omg, it is "in production" now, few days ago it was in "art department"

 

Cool that's the new one Speedhut started offering, recently. It comes with the sensor. When I bought my gauges, they didn't offer that. I had to get the gauges from them and the wideband O2 separately from Innovate Motorsports. Your setup works out to be less expensive.

When it says 'in production', it should ship within a couple days. I've ordered from Speedhut a few times. It always seems like the 'art department' portion takes the longest.

 

Just curious. How long ago did you place your order?

 

20 days ago

 

In my case it is "in production" longer than "in art department"

 

Same here...

 

mine was shipped today . will get it next Tuesday (is it express shipping for extra money ???)

 

Good to hear. Mine should be pretty close then.

 

Shipped today with Monday delivery!

 

question for @loginfailed : where i can connect green cable from AFR gauge (throttle position sensor)

 

I think you're looking for coonector at ECM behind glove box. Toyota calls the wire VTA1. Connector E11 pin 21. G-B means green with a black stripe. Not sure if this is the right diagram but look at page 4:

http://www.moranbahweather.com/toyota/lc_trj12/rm/rm1017e/m_05_0073.pdf

My gauge doesn't have the WOT warning light feature like yours so I didn't have to hook up that wire.