I have a 87 TII (free mods mostly) I plan on getting the rtek 2.0. I have an AEM wideband kit that I plan tp install when I get a gauge for it. The uego kit has a standard 0-1v output along with the 0-5v output. From what I understand the 0-1v output can be connected to the factory o2 input into the ecu in order to eliminate the factory o2 altogether. Would this be beneficial to do with the rtek upgrade so that, in theory, the o2 input into the rtek would be a lot more acurate and possibly be able to tune off of it? I hope this thread makes sense. Also, what are the largest injectors the rtek can run?

 

You should be able to use the 0-5v output on the AEM wideband and use the ATP input on the ecu to datalog with. Using the 5v signal is more accurate to tune with instead of trying to use the 0-1v signal.


What would be the benefit of replacing the stock o2 with the wideband? Maybe better gas mileage? The stock location might be to hot for the sensor. Look at the instructions for the AEM and see what it says about mounting the sensor.


720's are the largest you can use.


Make sure you read through the faq and download the instructions from pocketlogger.

 

Yes, the Rtek Stage 2 instructions have a chapter on connecting the WB output to your ECU.

Typically the NB outputs from a WB is just that, a narrowband output, so it's useless to use for tuning and even if it was more accurate, the ECU only uses it as a lean/rich switch. Connect the WB output to the ECU.

95nracer is right about the stock position possibly being too hot. Usually they want them at least 2 feet away from the exhaust port. Read the AEM instructions.

Please read the FAQ about injector sizes. 720s are NOT the largest you can run, but are the largest that the ECU will *automatically* compensate for.

 

Sorry, thanks for the correction.

The injectors that I'm running are 850's all around right now.

 

Please forgive my ignorance if this is a stupid or obvious question, but...

If I were to replace my O2 sensor with one that reads 0 - 5 volts, wire it to the 2H (ATP sensor) pin on the ECU, and then run the appropriate scaling routine in the Rtek, would I then be able to read my air/fuel ratio on the PDA, and thereby have a wideband setup that could provide real time data?

If so, the Rtek just got much more attractive to me!

Thanks (in advance) for your answer.

 

Yes. But to clarify, there are no O2 sensors that put out 0-5v. You need a wideband sensor *and* controller. The controller is the part that has the 0-5v output. (and it must have a linear output to be useful)

 

Thanks for the clarification.

So, an "Rtek wideband" will be a little more expensive than I was thinking. I thought that Bosch offered a 0 - 5 volt sensor, but I always tend to over-simplify things.

It's still very appealling--I can feel my wallet struggling to get free.

 

OK. I took the plunge and installed both the Rtek 2.0 and a PLX M250 wideband this weekend, and both devices appear to work very well together. To save buck$, I ordered the wideband without a guage or readout, thinking that I could use the Palm Pilot for my readout, and I'm very happy with the results.

As per the Rtek instructions, I connected the 5V signal to the 2H pin, the 1V signal to the 2D, and grounded to the 2C. This particular wideband requires installing a small capacitor in parallel between each voltage signal and the ground in order to eliminate noise and achieve a stable reading. I did so (with great trepidation) and my readings are very stable.

Unfortunately, my car's all torn apart at the moment, so I could only start the motor and rev it a little bit to test the results and experiment with the Rtek. However, the tuning potential seems excellent, and it seems to me that installing the wideband in conjunction with the Rtek is the way to go t maximize the Rtek's potential. I'm really looking forward to logging the fuel related variables, and tuning based on the results.

 

has anyone tried the rtek2.0 with the ngk wideband and o2.. i think the ngk comes with a display to connect to the o2 sensor.. would it be better to just get any wideband 02 and not worry about a guage or display if one could just have a readout on the pda as did buttsjim??

 

http://www.digitaltuning.com/index.php?pid=plzt

 

is that a seperate system or does it run thourgh the rtek?

 

The PocketLOGGER ZT is software to plug your Palm into the Zeitronix wideband system. It has nothing to do with the Rtek. But this is explained on the page Hailers linked.

 

do you still have the software just picked up a stage 2 s5 t2 n370 rtek with zeitronix wideband