i just took my tc to the tuner today and he couldnt tune it right because there is no o2 sensor reading at all. they are both plugged in and the wiring looks good. i have dezod s1 kit with their pnp harness. help with this please?

 

Open the Setup dialog box
In the O2 sensor section (top right)
Load Input = MAP (Sets the Y axis of the O2 map to the internal MAP sensor)
Mode = Voltage (says the table will contain raw voltages)
Period = Not applicable for Voltage mode
Bank1 Hi voltage = 4.95
Bank1 Lo voltage = 0.0

Now open the O2 Map by either clicking on the icon with the big "O" in it or select "O2 Map" under the maps menu.

The O2 Map is a 21 RPM (X Axis) by 17 Boost (Y Axis) table. In each cell is the voltage you want for each operating point (The F/IC interpolates between the 4 nearest breakpoints for smooth transitions).

Set up the load axis by clicking on each breakpoint and setting it to whatever you want. You can also drag a bunch of them and it will interpolate between the end points. Do the same with the RPM. These two sets of breakpoints are unique to this table so changing them wont change them in other tables.

Enter the desired closed loop AFR target into the cells of the table using the following values.

AFR Value
17.4 4.0
17.0 3.9
16.6 3.8
16.2 3.7
15.8 3.6
15.5 3.5
15.2 3.4
14.9 3.3
14.7 3.2
14.4 3.1
14.2 3.0
14.0 2.9
13.8 2.8
13.6 2.7
13.5 2.6
13.3 2.5
13.2 2.4
13.1 2.3
13.0 2.2
12.9 2.1
12.8 2.0
12.7 1.9
12.6 1.8
12.5 1.7
12.4 1.5
12.3 1.4
12.2 1.3
12.1 1.2
12.0 1.1
11.9 1.0

So if you want 13:1 AFR in a particular point, put 2.2 in that point in the table. Some minor tweaking may be required but these values will get you VERY close. As long as the factory ECU is in feedback then these values will be used.

IMPORTANT:
If you just change the target AFR, the factory ECU will adjust the trims to achieve the desired AFR. BUT, if you make huge changes then you will get huge trim corrections and the chance of a check engine code for excessive trims. Dont forget to adjust the fuel maps to add the approximate amount you are requesting here. That way the trims will stay near zero!

 

do you have an AFR gauge? or does your tuner have one?

 

i have the aem uego in the car and hes got one on the dyno

 

aempower.com > forums > look for the F/IC thread... and search for scion tc... it should get you started

 

h my tuner used that same table with those values he tuned so is somewhat driveable but where the bank1 and bank2 are there is no reading i dont have a cel light on so i dont think is my 02 sensors not working

 

You got the F/IC from dezod with a kit and it didn't come with anything on it? no base map or nothing?

If you need it, pm me your email addy and I can send you a few maps to at least get your tuner pointed in the right direction. But it's just the maps, not the settings.
You can get those settings off the Scion tC thread at the aempower.com forums.

 

i did get a base map from paul at dezod my tuner used that one to get started and he tunned my car so i can i least drive it. the only thing is that i cant get no 02 volt reading on the fic bank 1 and bank 2 even when the car is revved