Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
AEM Uego WB 02 Questions

I finally got around to putting a aem uego i had sitting around from an old project in my 930. It has a out put for datalogging but I am not sure how to do it with this car..ie what software to use.

Secondly I have some really wierd a/f readings...cruising at 30mph i was at 17-18, if I floored it they would go down to about 10.9 when the boost kicked in. Doesn't that sound like some wierd readings?

I am thinking I will need to get a leask or UTCIS adjustable wure to tune this in now..
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 05-04-2008, 05:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
930gt-40r's Avatar
 
Join Date: Jan 2007
Location: Boca Raton, FL
Posts: 2,063
Im sure your fine with that cruising reading- on boost it sounds a little rich but thats fine. As for the out put I dont know how you would do it- Maybe AEM sells the software for the computer. I have the same unit in my car.
__________________
Kris @ Tech9
86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 05-04-2008, 06:25 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,224
If the gauge is calibrated and accurate thats good if it's running well, but what is the AFR up around 6000rpm under boost?
Old 05-04-2008, 07:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
I didn't take it up that high, I just drove around the block to see if the gauge worked. Maybe I will wind it out tomorrow and see what if reads.
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 05-04-2008, 08:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
BoxxerSix's Avatar
 
Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
Quote:
Originally Posted by mdurbahn View Post
I didn't take it up that high, I just drove around the block to see if the gauge worked. Maybe I will wind it out tomorrow and see what if reads.
Remove the sensor from the car and plug back into the gauge. Disconnect power from gauge from ~5 minutes, hook back up, and turn on the car with the sensor hangin in free air. Do a free air calibration. Sensor should read ~14.7 after 2-3 minutes. Shut off, let cool, and reinstall sensor.

AEM units are known to be off by a bit. I've installed dozens in various cars and they're always different. Compared to my two known accurate LM-1's here I've recorded discrepancies of anywhere from .1 to ~.9 on the AEM. Has to do with that damn calibration resistor AEM uses in those sensors they give you.

Data logging capabilities just require a basic RS232 software. Blue wire goes to a serial 9 pin connector that allows a cable connection to a laptop or PC for data logging. Also a common 0-5v output that most ever program or EMS uses to compute AFR if needed(white wire)


I should add that you can use Hyper Terminal in Windows to data log this information if needed.

data = 8bits
bps = 9600
stop bits = 1
parity = none

You'll need female 9 pin connector to solder to the gauge leads. Blue goes to pin #2(2nd one in from right on group of 5 on top, looking at connector end) and you need a chassis ground to pin #5(5th one in from right on group of 5 on top looking in from connector end)
__________________
Adam Hennessy

Last edited by BoxxerSix; 05-04-2008 at 08:46 PM..
Old 05-04-2008, 08:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
beepbeep's Avatar
 
Join Date: Jun 2001
Location: Sweden
Posts: 5,560
Do you have air-injection hardware installed on your engine? It will mess upp the O2 readings.
__________________
Thank you for your time,
Old 05-05-2008, 01:20 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
Quote:
Originally Posted by BoxxerSix View Post
Remove the sensor from the car and plug back into the gauge. Disconnect power from gauge from ~5 minutes, hook back up, and turn on the car with the sensor hangin in free air. Do a free air calibration. Sensor should read ~14.7 after 2-3 minutes. Shut off, let cool, and reinstall sensor.

AEM units are known to be off by a bit. I've installed dozens in various cars and they're always different. Compared to my two known accurate LM-1's here I've recorded discrepancies of anywhere from .1 to ~.9 on the AEM. Has to do with that damn calibration resistor AEM uses in those sensors they give you.

Data logging capabilities just require a basic RS232 software. Blue wire goes to a serial 9 pin connector that allows a cable connection to a laptop or PC for data logging. Also a common 0-5v output that most ever program or EMS uses to compute AFR if needed(white wire)


I should add that you can use Hyper Terminal in Windows to data log this information if needed.

data = 8bits
bps = 9600
stop bits = 1
parity = none

You'll need female 9 pin connector to solder to the gauge leads. Blue goes to pin #2(2nd one in from right on group of 5 on top, looking at connector end) and you need a chassis ground to pin #5(5th one in from right on group of 5 on top looking in from connector end)

Thanks, sounds like I will be able to datalog with this afterall. One question though, are you saying the sensors aem uses aren't very good or the gauge it self? I ask before I am pretty sure the sensor said bosch on it (thought that was a decent brand).
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 05-05-2008, 06:20 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
Quote:
Originally Posted by beepbeep View Post
Do you have air-injection hardware installed on your engine? It will mess upp the O2 readings.
Yes I do, I was going to take it off sooner or later. Looks like I have a good reason to now.
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 05-05-2008, 06:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
BoxxerSix's Avatar
 
Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
Quote:
Originally Posted by mdurbahn View Post
One question though, are you saying the sensors aem uses aren't very good or the gauge it self? I ask before I am pretty sure the sensor said bosch on it (thought that was a decent brand).

It is a Bosch unit, however unlike the Innovative units the AEM gauge doesn't calibrate the sensor being used TO the gauge itself. Rather AEM pre-calibrates the sensors with these little resistor packs in the main sensor electrical connector. As such the sensors are never dead accurate as compared to any of the more effective WB02's. The JAW is even far more accurate than the AEM and just as good if not better than some innovative products.

The AEM is good for a moderate population looking for a much better AFR reading than your typical o2 gauge, however still not quite up to par for major tuning by my standards. AEM really needs to program a free-air calibration mode into the gauge and ditch the resistor packs.

And yes the air injection will certainly throw off the reading by quite a bit. Ditch it and plug the heads.
__________________
Adam Hennessy
Old 05-05-2008, 05:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Dec 2004
Location: Danville - CA
Posts: 1,259
Quote:
Originally Posted by BoxxerSix View Post
Remove the sensor from the car and plug back into the gauge. Disconnect power from gauge from ~5 minutes, hook back up, and turn on the car with the sensor hangin in free air. Do a free air calibration. Sensor should read ~14.7 after 2-3 minutes. Shut off, let cool, and reinstall sensor.
I doubt that you should be seeing 14.7 as a result of performing a free air calibration. My innovate shows 20.8 during the same procedure.
__________________
Rob Montgomery
'88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running
Old 05-06-2008, 09:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Macht Schnell
 
les_garten's Avatar
 
Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Hmmmm,
Interesting thread. I was under the impression that Bosch put those resisters in there at the factory. Perhaps we can see a picture. Also, if you are getting 14.7 on room air, call God and tell him "your air" is a little rich, I can hear you slurring your voice from all the Gas fumes, from here, please don't light a match! 20.8 is most likely the end of the voltage scale, I don't have my sheet in front of me of what these read at 5v, which would be dead lean on atmospheric air.
__________________
---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT

Last edited by les_garten; 05-06-2008 at 10:51 PM..
Old 05-06-2008, 10:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
A fellow Pelacanite
 
NathanUK's Avatar
 
Join Date: Nov 2006
Location: UK
Posts: 2,002
Garage
Read the post again. The setup does not measure free air like the Innovate.
__________________
1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 05-07-2008, 11:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Macht Schnell
 
les_garten's Avatar
 
Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Quote:
Originally Posted by NathanUK View Post
Read the post again. The setup does not measure free air like the Innovate.
Ok, I give up, how many times do you want me to read this...

Quote:
Remove the sensor from the car and plug back into the gauge. Disconnect power from gauge from ~5 minutes, hook back up, and turn on the car with the sensor hangin in free air. Do a free air calibration. Sensor should read ~14.7 after 2-3 minutes. Shut off, let cool, and reinstall sensor.
__________________
---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT
Old 05-07-2008, 01:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
BoxxerSix's Avatar
 
Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
Quote:
Originally Posted by 930LDR View Post
I doubt that you should be seeing 14.7 as a result of performing a free air calibration. My innovate shows 20.8 during the same procedure.

Ah yea my fault for dubbing it as a "calibration". Has nothing to do with displaying the actual AFR in free air in reality, just a test mode where the AEM gauge detects major lean condition with sensor in open atmosphere and goes into a read mode where it displays 14.7 on the gauge if the sensor is good. If it doesn't the resistor in the sensor is bad/off and the sensor needs to be replaced. It's not the same as an innovative where you must do a free air calibration on the senor prior to first using it.. Just some programming loop in the AEM itself to test for sensor calibration from the get go at least in the ones I've installed in the past.

Still 50/50 on the unit itself. Works ok for the majority of the public I guess but still not accurate enough for my tastes. Fancy import gauge thing to me meant to look pretty in a dash/pod on Hondas and Evos, etc.
__________________
Adam Hennessy

Last edited by BoxxerSix; 05-07-2008 at 08:44 PM..
Old 05-07-2008, 08:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
what? me worry?
 
TimT's Avatar
 
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 6,835
Quote:
AEM pre-calibrates the sensors with these little resistor packs in the main sensor electrical connector.
No the calibration resistor come with the sensor.Bosch installs these.

Quote:
I was under the impression that Bosch put those resisters in there at the factory
Yes

Lots of info regarding WB sensors on the WBO2 site

More info here

I had a Bosch white paper describing the how they (Bosch) calibrate the sensor. It must be on another pc

more regarding the resistor:


Quote:
The manufacturing variation problem, which results in sensors of varying sensitivities (differing pump currents for the same Lambda), is solved by adding a calibration component. A resistor (Rcal) is laser trimmed after the sensor is constructed and tested. The laser burns away material and increases the value of the resistor until a standard Ip current is produced at a known Lambda value. If this circuit is reproduced in the controller itself then each sensor will be automatically calibrated without further calibration. Obviously, as each sensor is factory calibrated, and the calibration component is usually in the sensor connector itself, if someone removes the connector, then the sensor has become uncalibrated!
Sorry I cant add anything about operating the AEM UEGO as I've never used one..

back to you regularly scheduled programming
__________________
who are those guys? <<< ( Butch Cassidy and the Sundance Kid)
Rent a GT3RS from us!! Call or e-mail.
Transportation and Track support
Rudtners Racing

'69 911 GT-5
'75 914 GT-3
Authorised Haltech seller and installer
Authorised Unichip installer
BBS wheels
Fikse wheels
Redline motors oils
Swepco
1500 hp chassis dyno

Last edited by TimT; 05-07-2008 at 10:39 PM.. Reason: added info
Old 05-07-2008, 10:31 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
BoxxerSix's Avatar
 
Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
Quote:
Originally Posted by TimT View Post
No the calibration resistor come with the sensor.Bosch installs these.....

The manufacturing variation problem, which results in sensors of varying sensitivities (differing pump currents for the same Lambda), is solved by adding a calibration component. A resistor (Rcal) is laser trimmed after the sensor is constructed and tested. The laser burns away material and increases the value of the resistor until a standard Ip current is produced at a known Lambda value. If this circuit is reproduced in the controller itself then each sensor will be automatically calibrated without further calibration. Obviously, as each sensor is factory calibrated, and the calibration component is usually in the sensor connector itself, if someone removes the connector, then the sensor has become uncalibrated!


Ok now that makes sense to me. Never really looked at the other sensors with other widebands, it was just brought to my attention on the AEM units and I assumed it was an AEM thing. DOH! Guess I should pay more attention to my tools and electronics here, hahah!.
__________________
Adam Hennessy
Old 05-08-2008, 03:13 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
A fellow Pelacanite
 
NathanUK's Avatar
 
Join Date: Nov 2006
Location: UK
Posts: 2,002
Garage
Quote:
Originally Posted by les_garten View Post
Ok, I give up, how many times do you want me to read this...
Get it now Les?
__________________
1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 05-08-2008, 10:07 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Macht Schnell
 
les_garten's Avatar
 
Join Date: Jun 2003
Location: PSL, FL
Posts: 861
Quote:
Originally Posted by NathanUK View Post
Get it now Les?
Wellllll... He was putting it in free air. I think it is a mistake for a gauge that reads dead lean to display 14.7, but that's just me and how I roll! Mine doesn't do that, and others usually show 20.8 which is a common number calculated off of the 5v range of the sensor. Mine shows something like EC or some error code
__________________
---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT
Old 05-08-2008, 11:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
Well I did a little more testing this morning. At upper rpms 5k in boost I am at 10.5 and at 6k in boost I am at 10.0. So it pretty rich, I will leaning it out a quater turn and see what happens.
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 05-10-2008, 06:52 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 03:57 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.