I can't find any reference on the DIY-EFI archives. Ane the instuctions still avaliable? Is the prototype still in opertion? Grumpy are you listening?
Jason

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89 Six Speed FX3 coupe
More Performance 396cid specs:
Callies 4340 crank 3.875 stroke
Lunati Pro-Mod 5.85" rods
SRP Pistons 14cc dish
Comp Cams Custom cam 550 lift 220/229 duration
10.8:1 compression
AFR 195 competition ported heads
Miniram and TPIS 1 3/4" headers

 

It's posted at incoming, but there is alot of work being done on a much better version.
Daz all I can say for now..

 

Thanks. Very interested in this project. I'll look for it on incoming

------------------
89 Six Speed FX3 coupe
More Performance 396cid specs:
Callies 4340 crank 3.875 stroke
Lunati Pro-Mod 5.85" rods
SRP Pistons 14cc dish
Comp Cams Custom cam 550 lift 220/229 duration
10.8:1 compression
AFR 195 competition ported heads
Miniram and TPIS 1 3/4" headers

 

http://www.diy-efi.org/diy_efi/projects/diy_egor/

 

I don't quite understand. How does EGOR work? Is it in place of the O2 and able to work with the computer? or is it something totally different?

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes

 

In short it does not replace the O2 sensor for the ECM.

The concept is that this is a meter that you are going to have in the car (or out, if you are on a dyno) & as the motor is running you can look @ it & see what the AFR is. The up side is that you can see what the AFR is & have an idea if you are going to want to tune up or down. the down side is that if you are @ the track & screaming down the 1/4 you probably dont want to look to the meter to see what it is doing. In this case, data logging the data is a good idea.


hth

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Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

 

It's a wide band O2 sensor so you can get some true idea of where you are fuel wise. The gm oems are switching types and just tell you rich or lean, and are effected by operating conditions, so they are not at all accurate for really seeing what is going on. With a WB you can see what weather changes (if the cal is off) make etc..

 

Do any wide band O2 sensors feed info to the ECM or do they all just work with a DVM? I know there is a concern about using this information for profit. Some of us are just too busy and/or lack the knowledge required to build such a device. I for one would appreciate being able to buy one. I have to go to a local dyno and use his for $125.00 per hour on the dyno. Is the new design able to work with the ECM?

------------------
89 Six Speed FX3 coupe
More Performance 396cid specs:
Callies 4340 crank 3.875 stroke
Lunati Pro-Mod 5.85" rods
SRP Pistons 14cc dish
Comp Cams Custom cam 550 lift 220/229 duration
10.8:1 compression
AFR 195 competition ported heads
Miniram and TPIS 1 3/4" headers

 

I dont think that you are going to be able to get a WBO2 to work with any factory ECM. the problem is scale & offset. the factory ECM is expecting that the O2 is going to be @ 14.7:1 @ about .5 Volts & is going to expect the O2 sensor to have a certain number of O2 Cross counts. with any of the WBO2's neither of these is going to be satified. The offset issue is not that big a deal, & one would probably get away with the cross counts issue w/o having to do anything, but. once you have this "working" what is the ECM going to do with the info. if XXXX mv = YY:1 AFR, the ECM is still not going to know what to do with that information.

I suppose if you were able to work all these small things out & you did have a table that showed what AFR is what Voltage you could data log this with your Data Master or Diacom, to tell you rich or lean. THIS, would actually be of some use for tuning purposes.

hth, & that i am not too far off base.
BW

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Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

 

Interfacing the WB to a stock ecm is easy. teh oem sensor is of the switching type. Now for datalogging is s seperate issue.
The WB needs to have it's output interupted several different ways depending on use.
If you want to straight data log it *just* use a 0-1 output, and run the ecm with the C/L enable set at 254, ie as in for racing. Then change chips, and ouputs from the WB for enabled C/L.
Bruce

 

Cool, I see what you mean. 'spose you are right, could be done if scaled the output for the appropriate voltage & then burned the prom to pay attn to what i wanted it to pay attn to (economy or WOT).

I did not consider that, only thought that it would not do both @ the same time so, "it cant possibly work". out of small minds come small thoughts. get out your micro scope to check out the size of my thoughts.

Tanx
BW

------------------
Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

 

I need a little help. I'm sure this is all beyond my electronic ability (I was probably pushing it building an ALDL cable) at this time but, I'd still like to learn as much as I can.

I've downloaded the zip file and took a look at the schematics and the exce lfiles, but I don't know what program to use to look at the .dxf and .sch files.

Any help would be great.
Thanks

 

My old prototype still works jsut fine.
There have been a few guys working in a new *light* on how to handle things. There is a finished prototype in use, and a guy is now working on PCBs. So for the moment it's still a hang in there ist's coming mode. But, the new one is simplier, and very much improved, VERY.

I'm waiting on parts to build one, of the new ones, if I can build it and geting it working, just about anyone can.

 

Grumpy when do you expect the new version to be completed? Will it be compatible with the ecm? I've been trying to learn as muchas I can, after the fact, ie I didn't start into proms until a few of months ago, is there talk of the diy egor in the archives at GM_ecm? I've started reading them totry and "catch up" but thefiles issohuge that it's taking forever.
Anyways thanks for devoting your time and knowledge to helping DIY'ers.

 

Mystupidspacebarisactingup.

 

It's completed and being tested.
Just a matter of final tinkering and this time were working on a PCB we're so happy with it. Still working on interfaces for da humans and the ecm. Just to give a prospective on it, it's been 4 years in the works. Hopefully in weeks, but any problem will delay that.

MINESTICKSATTIMESTOOSPECIALLYWITHCAP>LOCKON
HAHAHAHA

 

I still don't know how to open the files I mentioned above. Can anyone help me with this?
Thanks