Snail Tuning

Ok guys i finaly got enough money saved up and bought a wideband. i went with the Zeitronix becuase of the price, and the dataloging software included.

I bought the display, and still have yet to use it.

I used an older satellite pro 400SC to datalog. to make this getup really nice i would reconmend atleast a 200mhz, pentium2, and atleast 64 megs or ram.
CD rom USB are recomended.

Ok hears the install pictures. i used a 6 wire plug from switft auto to make the widband easily removable and plug and play from car to car.
I soderd the harness to the ECU wires.

Then the harness to the wideband harness.



Directly from the widebands manual and vafc install guide
Red=switched power=A25 ECM power
Green=RPM=A21 for obd1 P28 ECU
Black, brown,brown=ground=A26
Grey=TPS=D11
Blue=user input=D17 presure signal from ECU
Purple=narrow output=D14 (which is the narrow band input on the P28 ECU)

Some FAQ's
if you have a 1 wire, just remove it unhook it, and replace it with the ZT2 unit.
if you have a 4 wire, using uberdata use the o2 heater disable.
if you have a 4 wire, and you are using the hack.
you have 2 options. either test the resistance of the 4wire sensor, unplug the o2, and put the resistor in the heater circut. very easy to do. then just do the reverse when your done, or put a break in the signal circut, so the narrow band input on the ECU doesn;t get conflicting signals.
What if the people are just using a 4 wire 02 sensor with a vafc ? Would the resistor thing still work ? Also curious how the resistor thing works, a narrow band 02 sensor sends like an on and off signal, I would think just wiring a resistor in would tell the ecu a constant a/f that never changes.

with the AFC and 4wire.
1. remove oxygen sensor from bung.
2. Place proper ohm resistor in heater circut, not the signal circut. (you throw a code, because the heater circut is broken with the stock sensor removed. placing a resistor in this circut in theory would act as a load device, completing the circut, but fooling the ECU. in theory this should work. i have not tested this method yet. so someone plese chime in.)
3. Place 5wire o2 into bung, and tighten.
4. Wire in 6plug connector to ECU.
one wire is power, one wire is ground, one is RPM, one is TPS, one is map voltage, one is narrow band output. (wait the stock o2 has been removed, and now the ZT2 is replacing this signal with a more accurate reading.) if you leave the stock o2 pluged in, it may give the ECU mixed signals becuase it will be getting 2 signals instead of one.)
5. feed o2 sensor cable through fender and in through door. finish all connections.
6. connect data cable to ZT2 and laptop.
7. start car, and check for any codes. allow for 30 sec warmup, begin dataloging.

ill have to double check my theory on the resistor on monday at school. but if you use uberdata there is a feture to disable the o2 heater circut.

another option would be to make a cable break in the o2 signal wire. just leave the o2 sensor pluged in, but break the signal cable. meaning unplug just the one wire. this would alow the o2 heater circut to work, but no conflicting signals.

Dataloging explained

Graph 1. 2000 RPM's A/F 13.50


Graph 2. 4700 RPM's A/F 10.80


Graph 3. 6698 RPM's A/F 12.10


this is after a few dataloging sessions, and then adjusting things in uberdata. looks pretty damn good to me. i adjusted the rich spot to bring it back up closer to 12.0

the user input is my map sensor voltege.


the only problems I have had has been the RPMs sometimes spike, and for some reason the unit will randomly stop dataloging.

but the last few runs were flawlis.

ill be adding alot more pics and info feel free to ask questions. or post your experiances. Ill be posting what color wires go to what pin on obd1 cars. to make installing very easy for others


Modified by Snail Tuning at 3:37 PM 2/6/2005


Modified by Snail Tuning at 3:49 PM 2/6/2005

DA9-T

Looks good! I can't wait to get mine in after the GB is over. Keep us posted.

Archidictus

I see you have the EGT all squared away . Good deal, Ben. What did you do to keep it from spiking? Did it just stop on its own or what?

Syner-G-Racing LLC

whats up with the wide band out put and the simulated narrow? I know the simulated narrow is for a stock ecu...so if your running hondata do you hook up the wide band output to the ecu? or just the narrow regardless of what piggy back system you use.

then my next question is where does the wideband output go if you wire the narrow to the ecu?

Snail Tuning

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syner-G-Racing &raquo;</TD></TR><TR><TD CLASS="quote">whats up with the wide band out put and the simulated narrow? I know the simulated narrow is for a stock ecu...so if your running hondata do you hook up the wide band output to the ecu? or just the narrow regardless of what piggy back system you use.

then my next question is where does the wideband output go if you wire the narrow to the ecu? </TD></TR></TABLE>

the narrow band output is souly used so your ECU doesn't throw a code. just pulled my stock o2sensor, checked the o2 heater disable in uberdata, and ran the narrow band output to the stock location.

i would assume the wideband output would be for say dataloging with uberdata, or so your hondata can auto tune. but personaly i would use the zeitronix dataloging over the other 2, and just leave the wideband output alone.

Syner-G-Racing LLC

thanks alot...I hooked it up last night. I used a 7conductor alarm cable to lengthen the harness. it come out pretty good. Ill post some pics tonight. I would like to know how to hook it up to hondata if anyone knows. thanks

Burke

can you scale your map sensor voltage???
do you know the map sensor scale????
i just bought one and was gonna do the same cause i wasnt about to pay 139 for their stinkin boost sensor.

thanks
Burke

Burke

bump for your thread and my hijacking question

Snail Tuning

well i belive 5 volts is like 11.4 or 11.9 lbs, becuase when the stock map hits what ever it maxes out at PSI wise, it will read 5 volts.

so if you datalog your user input and set your map as the input, you can datalog when you start to boost, and guessdimate what psi you are at.

Burke

i know its a linear output, so i was gonna get two points and create a trendline and hopefully be albe to configure it in zeitronix.
thanks for the help!

Syner-G-Racing LLC

so can you hook up a 3 bar to the user input? I hope cause I did.

Snail Tuning

ill be running this on a GSR Turbo very soon. and also in the spring ill be attempting to hook this up to my soon to be turboed Suzuki GS500E.

if anyone else has questions feel free to ask.

dustin

Did you have to do anything special to your com port settings (baud rate, etc?) to get the datalogging to work?

I have it all hooked up, and in hyperterminal if I short pins 2 and 3 on the serial port I get loopback....(it echos what I type), so I know the com port is working.

But the Zeitronix datalogger never shows anything when it is "collecting data", and it never errors out either. I can't get hyperterminal to show anything when I am connected to the zeitronix box either.

My LCD works, so I know data is coming out of the zeitronix box.

Zeitronix doesn't seem to have any sort of phone# or forum, so I can't really ask them.

LostCRX

The space bar and the enter button are what got me confused at first, supposely one is for stoping the scroll and the other is to stop datta logging. Try to messs with two buttons and see what's going on. I love my unit, best bang for the buck.

dustin

I tried all that... heh. I just can't get any serial data from the box.

dustin

Ok I got it working... I didn't change anything it just started working heh.

crucian

Ok, I dont mean to bring this topic back, but I think I see something wrong with your installation. Please correct me if I'm wrong. Ok here we go, you connected the brown wires to a ground on your ECU, but actually, the brown wires are "sensor ground". They should be hooked up to a sensor and not to a regular ground. For example, if you are using the boost sensor, the ground wire for the sensor would be hooked up to the brown wire of the signal harness. The instructions stated that, if you are not using a boost sensor, the "boost sensor input" wire should be connected to a sensor ground (brown wire). Please correct me if Im wrong, I need to finish installing mine. Thanks!

dustin

Yeah sensor ground is a ground reference for your engine management system, etc. Since my engine management IS my ecu (hondata) I connected the sensor ground to the ECU sensor ground (used for O2 ground). I also have a switch that switches the 0-5v WB input or narrowband input to the O2 input at the ecu. This way I can take the car out of closed loop and datalog WBO2 through hondata, etc using the correct sensor ground.

Dustin

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">Yeah sensor ground is a ground reference for your engine management system, etc. Since my engine management IS my ecu (hondata) I connected the sensor ground to the ECU sensor ground (used for O2 ground). I also have a switch that switches the 0-5v WB input or narrowband input to the O2 input at the ecu. This way I can take the car out of closed loop and datalog WBO2 through hondata, etc using the correct sensor ground.

Dustin</TD></TR></TABLE>

I thought that a ground is a ground. Meaning regardless of what it is for any thing that goes to a ground is connected to the chassis. From my understanding the ECU itself is grounded through the floormounting bolts. And any ground pin on the ECU whether it is for injector ground or sensor ground is grounded to the ECU which is grounded to the floor/chassis. I thought it didn't matter if I used the ECU ground pins versus the actual chassis.

dustin

Ground is ground... but some grounds seem to have more noise than others. Grounding to the ECU case does weird things... I'd get different voltages off the WB if I compared the sensor ground wires at the ECU (for TPS, MAP, etc... I forget the exact pinouts at the ECU) to the case ground itself.

I have the Zeitronix unit getting "power" ground from the chassis... and then I have the sensor ground connected to the ECU wiring. Everything seems to work so I can't complain

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">Ground is ground... but some grounds seem to have more noise than others. Grounding to the ECU case does weird things... I'd get different voltages off the WB if I compared the sensor ground wires at the ECU (for TPS, MAP, etc... I forget the exact pinouts at the ECU) to the case ground itself.

I have the Zeitronix unit getting "power" ground from the chassis... and then I have the sensor ground connected to the ECU wiring. Everything seems to work so I can't complain </TD></TR></TABLE>

Ahhh I see, I never knew that different GND points would have more noise then others. I was gonna do the same thing as Snail Tuning, and cruician's post about him doing something wrong got my attention.

EJ1 wilcox

Just a random question...

Does the Zeitronix wideband come with good installation instructions?

I should be getting mine soon and I would like to know if I need to start researching the installation now so I can hook it up when it gets here...

Will I need to find a pinout for my ecu (p28) in order to wire it in?

I know I will have to splice into my ecu wires, do the instructions tell you which ones to splice into or am I going to have to figure that out on my own?

Thanks, I just want to prepare now so when it gets here I can install it and start logging ASAP...

dustin

It comes with a piece of paper that tells you what all the wires on the harness need to be hooked up to.

EJ1 wilcox

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dustin &raquo;</TD></TR><TR><TD CLASS="quote">It comes with a piece of paper that tells you what all the wires on the harness need to be hooked up to.</TD></TR></TABLE>

I'm assuming there are wires for RPM, TPS, Power, Ground, MAP, etc... how do you know which ECU wire is which?

Like when tapping into the RPM signal, how do I know which ECU wire is the correct one?

I remember the VAFC I had back in the day came with a diagram for my ecu... I'm assuming this doesn't come with one... I guess I'll go print out the diagram from APEXi's web site...

dustin

Zeitronix can be installed on any car... so they don't have any ECU maps or anything. The zeitronix people are actually DSM people anyways hehe.

You'll just need a helm manual or ECU pinouts for your car...

Helm manual lists the pinouts... search on here and people have lists of the pinouts too. For RPM you want to use the IGN output signal at the ECU.