Does anyone have a working combo all three of these components? I've been seeing a lot of horror stories looking around here and I'm curious to see how many people actually DO have it working!

List exactly what components you're using and any history of problems you encountered down the road.

 

https://www.rx7club.com/showthread.p...ighlight=knock

I was thinking of doing a wideband setup but then I realized just how much knowledge is actually required in order to properly tune and decided to spend the money getting the car professionally tuned.

It will work very well if you know what you are doing. However, I can't afford the learning curve (blown engine) if I screw something up.

 

Mine works perfectly and I tuned the car myself on the street for over 400 rwhp and 350 rwtq at 15 PSI.

Brian

 

My Tech-Edge v1.0 (NTK L1H1 Sensor)/datalogit/PFC combo has worked perfectly since day 1 and has been for over a year (never reporting more than .1-.2 leaner AFRs than high price shop units).

I have experienced the exact same accuracy and dependability with my TE-v2.0a.

What horror stories you do see are from usually from people who do not want to take the time to learn to tune their equipment or want to wring out the last 5-10% of performance. The overheating problems associated with the LSU-4 Bosch sensor 6-066 or 7-057 are remedied by installing a very low cost DIY heat sink.

So what problems are you imagining you might have?

 

Our M&W UEGO has worked perfectly for two years. It has both 1v and 5v outputs. Has it's own calibration chip and Voltage vx AFR is perfectly linear.

 

I have the same set-up as Jeff48

PFC/Datalogit/TEv2.0 w/ Bosch 6066 sensor($29.95)

Works great! No issues. I have the sensor placed 2" infront of the HF Cat Flange. So I haven't had any over heated sensor errors.

 

I know how you feel. However, once you dive in and start slowly, by taking baby steps. The fear subsides. I started by "practicing" tuning my afr's only in the NON-boost cells of the fuel map. I also started by adding a ton of fuel(read: stinking rich) and slowly leaning it out to 10.8 - 11.4 AFR's



I have gotten incredibly helpful advice from most of the guys on THIS thread. THANKS!

 

How's it going Jeff? I remember talking to you a while back

The main things I was fearing is compatibility and the overheating bosch sensor. It gave me such a bad view of the DIY Widebands that I was seriously considering a motec last night! Right now I have the PFC and am ordering a datalogit from rx7.com (they're currently out of stock), the only thing left that I need is a nice good reliable wideband. The Bosch sensor is not reliable if it can't work on cars that are far less power than my car will be...it's the ECU for christ sakes! It needs to be rock solid reliability; you also have to consider that I plan on pushing 550hp to the wheels and might have flames or whatever else pushing through the dp. With that in mind...is there ANY wideband sensor that can handle that kind of abuse?! I also really want to have it in the dp since that's the best spot to get a reading.

 

Chronos,

Not to start a flame war but you can install your wideband further away from the turbo and still get the same data. I have been using the tailpipe exclusively after finding no difference between the dp and tailpipe locations.

After seeing the price come down on widebands I am really thinking about a permanent install (the Rx7 store has a great looking AEM unit that mounts a gage in the cabin). If I do this I will likely put it in the midpipe if the wiring permits, should increase sensor life with the lower egts.

 

Chronos

Hey good to talk to you again---

There have never been an overheating issue with the LSU-4 when the unit is mounted at the far end of the DP. (See jpandes comment above). It turns out the LSU-4 had problems with all units using it as a sensor not just the Tech Edge unit. The problem is an overheat of the body, not the actual innards. The body temp must not exceed 850C or it will throw a fit until it cools down. There are three ways to avoid this problem.

1. use a copper heat shield (Drill a sensor threads sized hole in a 4x4 inch piece of 1/8" thick copper and bend one set of corners down and the other set up. Place the heat sink between the sensor body and the suuplied gasket washer and then install in the bung).

2. Locate a new bung somewhere close to the junction between the DP and MP or HF cat.

3. Use a tailpipe system (not accurate at speed or with a cat) no disrespect to twokrx7. When using it to test at the dyno, there is little or no difference between TP and DP UNLESS there is a cat or two between. On the road there CAN be a problem depending on pressures in the TP.

Hope that helps. Otherwise ask away and I will try to answer.

Jeff

 

Here is a link to a racing application that does the same thing as the Tech Edge, Innovate and LambdaBoy units. Just make sure you are sitting down when you read the prices.

http://powertrain.net/afm1000.html

I forgot to mention that the TE 2.0a now has, in addition to the analog Vout, a narrowband simulated Vout AND a linearized 0-5 volt WB voltage output so the datalogit polynomials are a thing of the past

 

Thanks a bunch for the info Jeff!

I'm very glad to hear that the problems I was fearing are easily remedied. I will have a mp so I can install the sensor in the beginning of that or the end of the dp as you suggested, I just hope it's far enough away to handle the extra heat of my target 500rwhp!

How much do you do you think the whole techedge system would set me back? I don't really need a display, just enough to interface well with my PFC/datalogit.

On a side note, I also plan on using water injection in the future to acheive my power goal...any ideas on whether or not it would affect the reading?

 

If you mount the sensor in the DP just before the MP connection you shoudl have no problems at all at any HP range.

If you are any good at all with a soldering iron, you can get the DIY controller kit, cable and sensor for around $200 US. I think the completed units go about 60% higher.

I am not sure about the water injection issue although I would bet that there will be some difference in the exhaust gas composition and therefore there will be some difference in the AFR reported. I posted your question on the TE message board. We will see if the water injection issue has been addressed.

 

Awesome! I really appreciate all the help...

$200 for everything I need on the whole wideband? What exactly do I need to do with the soldering iron to get it hooked up? Also, do you have a link where I can order one?

I'm also wondering if I should install into the mp since I might have to get a new dp when I fab up a manifold for the GT35/40 I'm planning to get. but then again, I might replace the mp with a high-flow all-metal cat in the future as well! Maybe I'll just have to lay that idea down to the wayside...is there any complications or drawbacks for installing the sensor at the begining of the mp instead of the end of the dp?

 

TE site is www.wbo2.com.
I don't guess there is any real reason not to use the MP location, just as long as the top of the sensor points up somewhere between 10 and 2 o'clock.

 

I heard of problem with the TE v1.0 that you have to add resistor or something....
Also what is the good polynomials for it?

 

Other than the 7-057 sensor overheat issue discussed about, straight out of the box there has never been any trouble reported by any Datalogit owner with a TE unit not reporting consistently accurate AFR readings. During the first run of the 2.0 there were problems getting certain datalogging functions working properly (Thermocouple and RPM). The problems have been solved in the current version of the 2.0a PCB (v3.0) If you have a datalogit, you don't need the logging functions available from the TEWB unit, just the AFRs, we log everything else through the PFC/Datalogit box.

The polynomial (y=ax^2+bx+c) for the WB depends on which sensor output you are using. If you are using the standard output then a=1.6344 b=-2.1693 c=9.914 and the datalogit works the math. If you use the WB's linearized digital output then all you need to do is put the number 9 in the box next to 0 volts and then put the number 19 in the box next to 5 volts.

 

Thank you for explaining that. I have been looking for the polynomials in the datalogit yahoo forum, but there is no certain answer, but a lot of answer that confuses me.
I just bought a TE v1.0 and using the Bosch L1H1 sensor... So far, I just connect it with the display. I didn't know that it has two outputs...Anything else that I need to know to use this TE v1.0 + L1H1 sensor + datalogit?

 

The 1.0 does not have the linear output option. and to connect it to the datalogit you must make a DB9 splitter. Open the DB9 shell that connects the 5301 display to the WB unit. Solder on an additional wire to the Vout and Grnd pins. Pin 7 (Vout) and 6 is (Grnd). Attach the Vout wire to AN1 on the datalogit and the Grnd wire to AN2. From the software select Auxillary from the setup and enter the polynomial in AN1 in AN2 simply put the 0 and 5 volts in place. Make sure you check the Delta AN1-AN2 checkbox and start logging.

 

Here is Peter's response to your question about the effects of H2O Injection on the AFRs.

"Water, injected as a mist of water droplets, ends up in the exhaust stream as steam which in most respects can be thought of as an inert gas. This increases the bulk of the exhaust gas while diluting the combustion by-products. If the exhaust back pressure does not increase (and this can normally be assumed to be the case) then the sensor will see smaller concentrations of either free oxygen or combustible exhaust by-products, so ...
A rich exhaust will read a little less rich (say 12.4 reads as 12.8), and a lean exhaust will read a little less lean (say 15.8 reads as 15.7)."


HTH

Jeff

 

Wow...thank you Jeff, you just gave me a lot of the answers that I've been looking for...
This thread is good.

 

Jeff

Thanks for the excellent information!

 

Anyone have success with the FJO and the Power FC? Or does it only datalog with a specific type of wideband like these guys using the one model specified already? i.e. TE 2.0

 

any have a greddy a/f wide band kit + datalogit

because i currently have the greddy wide band gauge and apex power fc and im interested in the datalogit for dataloging a/f ratios so does any have the cambo i know the datalogit has a 0-5v input but i dont know if the greddy gauge has the same output (0-5v)?????????????????????????

and i already done a search !!!!!!!!!!

 

Measure the +Vout of the wire going to the gauge needle actuator. If it is >+5V build a simple voltage divider with a couple of resistors and a capacitor to carry the +vout to both the needle actuator and the datalogit.