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Old 07-23-06, 02:40 AM
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Arrow Wideband

Hey guys,

I've been told on several occasions that I need a Wideband to save myself some time on the dyno.

I have a couple of questions:

1. Can the MS read directly from the Wideband O2 Sensor itself, or does it need some kind of interpereter unit inbetween the MS and the sensor to properly interperet the signal? I hope that makes sense...
2. What is the most recommended brand for the MS?
3. What wire(s) does the Wideband need to be wired to? I bought this MS used from a member here and don't have any of the wiring diagrams/instructions.

Thanks for your help!

-Andrew
Old 07-23-06, 03:06 AM
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1. You need a wideband controller to create the 0-5 volt signal that MS can understand. I use the Innovate LM-1 and it works great.

2. Innovate Motorsports is the cheapest I believe, and it seems to work well.

3. There's an O2 input pin. For the diagram, look for Renns's thread further down on the first page here. You can buy a semi-prefab harness from a couple different places, they are around $50 - $60 and all the wires are labelled on the wire itself, so it's easy to wire.
Old 08-22-06, 05:06 PM
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is this the $200 deal or the $349?
Old 08-22-06, 05:23 PM
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Originally Posted by RyoFC3S
I have a couple of questions:

1. Can the MS read directly from the Wideband O2 Sensor itself, or does it need some kind of interpereter unit inbetween the MS and the sensor to properly interperet the signal? I hope that makes sense...
2. What is the most recommended brand for the MS?
3. What wire(s) does the Wideband need to be wired to? I bought this MS used from a member here and don't have any of the wiring diagrams/instructions.

Thanks for your help!

-Andrew
Straight from the MegaSquirt Manual
MegaSquirt software has some support for Wide Band (WB) EGO sensors. Such sensors are made by:

* NTK (L1H1), also sold as Bosch 13246, and
* Bosch (the LSU4).

These sensors (with an appropriate controller) have a different trigger point for stoichiometric compared to a narrow band sensor, and the opposite “slope” to the voltage curve. They require a separate driver board to operate, such as the:

* DIY-WB board,
* Tech Edge controllers, or
* Innovate controller.
Any unit that provides a 0-5v signal will work, there are many on the market. Innovate is most common due to low price. There have been numerous reports of problems with Innovate hardware, but their support and replacement policy has been very good. Supposedly newer units are more robust than the older ones due to better protection circuitry on the analog outputs. The LC-1 is the cheapest of the Innovate models, at $200 with the sensor, but has no separate display.

All wiring details are in the Megasquirt manual, as well as the manual that comes with your wideband. Grounds must be terminated together at the MS. The analog output signal (appropriately configured) is connected to the EGO input on the MS box.
Old 12-09-06, 08:02 PM
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Reviving this old thread because I can actually afford this now...

Originally Posted by renns
The LC-1 is the cheapest of the Innovate models, at $200 with the sensor, but has no separate display.
Is THIS it?

All wiring details are in the Megasquirt manual, as well as the manual that comes with your wideband. Grounds must be terminated together at the MS. The analog output signal (appropriately configured) is connected to the EGO input on the MS box.
If I get this Innovative LC-1 (what I linked to just a second ago) is there some kind of live readout on my Laptop (in the Megasquirt) that tells the ratio? I've been looking around the interface and I can't seem to find it.

Here's my interface:


Thanks for helping the noob!

-Andrew
Old 12-10-06, 06:09 AM
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Get the released verion of MT 2.25 - not the beta.

Configure it for your WBO2.

Right click on any one of the gauges. "Swap to" will give you a list of available gauges. Select "Air:Fuel Ratio".
Old 12-10-06, 07:15 PM
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Originally Posted by Eagle7
Get the released verion of MT 2.25 - not the beta.
Done. But now every time I try to open MS I get this message:



Keep in mind, I do not have Megasquirt n' Spark (MSnS), just regular MS.
Old 12-11-06, 03:15 AM
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Hmm, I was messing around with it some more and I "Activated" one of the files in the mtCfg file -- I think it was called "msns-extra.ini.021s" or something really close to that. As a result I got v2.25 to open, but it gave me all these errors similar to the one I posted just before. And when i tried to load my settings from the old beta version it gave me all these errors: i.e. "Signatures don't match" or "size doesent match" and it warned that it could "severely mangle my configuration."

This whole situation is so confusing. If I didn't explain this well enough; I bought this whole MS system used and wired. The guy I bought it from sent me the software and his settings, but thats about it. He told me I need a Wideband to get it working optimally.

He gave me a few pointers how to install it when I bought it, but otherwise all I have is a bunch of software that I have no idea how to use and the MS hardware (as I understand it) installed in my car. I'm really bad at all this computer type stuff, but i'm willing to learn.

Thanks again for any help you can provide me with...

-Andrew

P.S.: Let me make it clear again, I do not have Megasquirt n' Spark (MSnS) setup, just regular old Megasquirt (MS).

Last edited by RyoFC3S; 12-11-06 at 03:21 AM.
Old 12-11-06, 08:53 AM
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If you really don't have the msns-extra firmware on your MS, then all you need to do is go into settings.ini, and where it says #set MSNS_EXTRA, change that to #unset MSNS_EXTRA, and where it says #unset MS1 (it might be MSI), change it to #set MS1.

That will set megatune up for the standard ms1 code.

Ken
Old 12-11-06, 04:45 PM
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Originally Posted by muythaibxr
If you really don't have the msns-extra firmware on your MS, then all you need to do is go into settings.ini, and where it says #set MSNS_EXTRA, change that to #unset MSNS_EXTRA, and where it says #unset MS1 (it might be MSI), change it to #set MS1.

That will set megatune up for the standard ms1 code.

Ken
It looks like that is how it was already configured:

Code:
#group CODE_VARIANT "Code Variant"
   #unset DFI        "David Hooke's Ducati FI "
   #unset DUAL_TABLE "Guy Hill and Eric Fahlgren's Dual Table variant"
   #unset MSNEDIS    "James Murray and Dave Hayne's MSnEDIS ignition variant"
   #unset MSNEDISmod "Roger Enns's MSnEDIS variant with staged injection"
   #unset MSNS       "Magnus Bjelk's MSnS ignition variant"
   #unset MSNS_EXTRA "James Murray and Phil Ringwood's MSnS extensions"
   #unset MS_ECU     "Robert Hiebert's EEC-IV replacement code"
   #  set MS_I       "Bowling and Grippo MegaSquirt"
   #unset MS_II      "Bowling and Grippo MegaSquirt-II"
   #unset PIC_SQUIRT "PIC squirt"
   #unset GPIO       "GPIO Direct Connection"
#endgroup
The errors it is giving me when I try to open Megatune are:

Code:
WARNING:Msns-extra.ini:0633 - Conditional check references undefined value 'WB_UNKNOWN'. Only first reference will be reported.

WARNING:Msns-extra.ini:0635 - Conditional check references undefined value 'DIYWB_NON_LINEAR'. Only first reference will be reported.

WARNING:Msns-extra.ini:0637 - Conditional check references undefined value 'TECHEDGE_LINEAR'. Only first reference will be reported.

WARNING:Msns-extra.ini:0639 - Conditional check references undefined value 'INNOVATE_1_2_LINEAR'. Only first reference will be reported.

WARNING:Msns-extra.ini:0641 - Conditional check references undefined value 'INNOVATE_0_5_LINEAR'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0025 - Conditional check references undefined value 'WB_1_0_LINEAR'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0043 - Conditional check references undefined value 'DYNOJET_LINEAR'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0067 - Conditional check references undefined value 'INNOVATE_LC1_DEFAULT'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0077 - Conditional check references undefined value 'ZEITRONIX_NON_LINEAR'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0083 - Conditional check references undefined value 'AEM_LINEAR'. Only first reference will be reported.

WARNING:lambdaSensors.ini:0089 - Conditional check references undefined value 'AEM_NON_LINEAR'. Only first reference will be reported.

WARNING:custom.ini:0015 - Unexpected or unsupported token 'defaultVersion'
Here is what it says when I try to load the old owner's settings into v2.25:

Code:
C:\Documents and Settings\Andrew\Desktop\Megasquirt\OLDSETTINGS.msq contains data not compatible with the current configuration:

1) Signatures don't match, found "MSnS-extra format 024s *********", expected "MegasquirtnSpark Extra V021s***".

2) Page 1 size doesn't match, found 200, expected 212.

3) Page 2 size doesn't match, found 200, expected 212.

4) Page 3 size doesn't match, found 200, expected 212.

5) Page 4 size doesn't match, found 200, expected 212.

6) Page 5 size doesn't match, found 200, expected 212.

7) Page 6 size doesn't match, found 200, expected 212.

8) Page 7 size doesn't match, found 200, expected 212.

9) Page 8 size doesn't match, found 200, expected 212.

This could severely mangle your configuration, are you sure you want to read it?

YES/NO Buttons
Hope that helps...
Old 12-12-06, 03:44 PM
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Bump... This is kind of urgent.

If no one can help me with the software problems, can someone at least tell me if this is ALL that I need for a wideband (and will successfully communicate with the MS ECU):

http://www.innovatemotorsports.com/x...9&cat=0&page=1

Thanks.
Old 12-12-06, 03:52 PM
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That wideband in the link you gave is all you need. I have the same one, it works just fine as is!!!
Old 12-12-06, 11:22 PM
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I'm not sure what is wrong with your megatune, I have never seen these errors.

I would suggest uninstalling it and reinstalling it...

On first install, it is already configured for the standard MS1 code.
Old 12-25-06, 03:49 PM
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Okay, so I tried installing MegaTune 2.25 on a different computer.

I get this error:

Code:
ERROR:megatune.ini:0034 - The included file 'MSnS-extra.ini' could not be opened.

Megatune is terminating.
And it won't let me open MegaTune because of that.

Grrr.. Any ideas?

Thanks again,

-Andrew

P.S. Oh yeah, I have the Innovative LC1 now. Once I figure out all this software crap hopefully i'll be able to install it.

P.P.S. MERRY CHRISTMAS!
Old 12-25-06, 10:53 PM
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when you get that error, you have set up megatune for msns-extra.

You must change your settings.ini back to the ms1 setting.

MS1 does not have an AFR target table like msns-extra though for operating in closed loop with varying AFRs depending on load/rpm... it just does the normal narrowband closed-loop algorithm with a different "switch point"

Ken
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