sct datalogging AFR with AEM UEGO.....What equation? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BlownSS · 06-04-2014, 08:07 AM

I am doing some datalogging to finalize my tune with JRE. I have the aem Uego installed. Gauge seems very erratic at idle. I have the gauge installed with a positive and ground to the chassis inside the cabin of the car. The AEM is conected to the SCT with a firewire. Im using the white wire from the AEM and connected to the red wire from the firewire. I am getting good readings during datalogging but it seems to vary a bit from what the gauge says at WOT. JRE wants me to be sure that they read the SAME before doing any more changes to the tune. How do I make sure that I am reading my values correctly at the gauge and the output that is seen in LIVElink? IS there an equation that has been a proven performer to set in the analog 1 position?

JANNETTYRACING · 06-04-2014, 12:53 PM

Quote:

Originally Posted by BlownSS

I am doing some datalogging to finalize my tune with JRE. I have the aem Uego installed. Gauge seems very erratic at idle. I have the gauge installed with a positive and ground to the chassis inside the cabin of the car. The AEM is conected to the SCT with a firewire. Im using the white wire from the AEM and connected to the red wire from the firewire. I am getting good readings during datalogging but it seems to vary a bit from what the gauge says at WOT. JRE wants me to be sure that they read the SAME before doing any more changes to the tune. How do I make sure that I am reading my values correctly at the gauge and the output that is seen in LIVElink? IS there an equation that has been a proven performer to set in the analog 1 position?

Running the Ground to the engine block gives a cleaner signal than grounding to the dash chassis.

What equation are you using Now?

With some one riding with you they can view what the log says vs what the gauge says they should be the same within a 1/10 or so but they move very fast.

thahemp · 06-04-2014, 01:46 PM

I take pictures of the computer screen and wideband then compare the numbers. Then you just add or subtract from the offset at the end of the equation to make them match.

BlownSS · 06-04-2014, 01:50 PM

Quote:

Originally Posted by thahemp

Then you just add or subtract from the offset at the end of the equation to make them match.

is this english? im more confused now!

BlownSS · 06-04-2014, 01:51 PM

Quote:

Originally Posted by JANNETTYRACING

Running the Ground to the engine block gives a cleaner signal than grounding to the dash chassis.

What equation are you using Now?

v*2 + 10

thahemp · 06-04-2014, 02:21 PM

+10 is the offset. Take pics of the gauge and computer screen so you can see what they both are simultaneously. Take the difference and either add it or subtract it from the +10. Mine ends up being 9.8.

thahemp · 06-04-2014, 02:22 PM

Although I thought it was supposed to be v/.5+10. I could remember wrong.

Haha.. nm it's the same thing.

BlownSS · 06-04-2014, 02:44 PM

went out and attatched the ground to the block.......much less erratic readings........after some watching both under load.......i concluded mine needs to be at 11.1 to match Does that seem odd?

thahemp · 06-04-2014, 03:13 PM

A little bit. You should probably be around .2 off. I'm gonna guess your ground swap there did more harm to the signal than good. I have mine grounded to a bolt in the fusebox side of the dash. It's hard to tell what you mean by erratic. It should be swinging back and forth around 14.68 all the time.

BlownSS · 06-04-2014, 03:24 PM

FML I guess i will just call ted and see what he suggests. Why is there always "one more thing" to do to get it dialed in? LOL........I did notice since the last adjustment to the fuel in the tune, it seems to be running richer and backfires after letting off of full throttle every so often

axis · 06-06-2014, 01:12 PM

You might consider switching to a better software, especially being FI.

Z1 Dunn · 06-07-2014, 10:02 AM

I have sct on my FI and it's been 9.90's with no weight reductions. sct does work

JANNETTYRACING · 06-07-2014, 10:15 AM

Quote:

Originally Posted by axis

You might consider switching to a better software, especially being FI.

There is No Better Software I have them all to choose from.

Ted.

thahemp · 06-07-2014, 10:15 AM

Quote:

Originally Posted by BlownSS

FML I guess i will just call ted and see what he suggests. Why is there always "one more thing" to do to get it dialed in? LOL........I did notice since the last adjustment to the fuel in the tune, it seems to be running richer and backfires after letting off of full throttle every so often

Mine does that too. I think it is caused by coming out of PE and dropping into the coastdown timing table. Nothing to worry about.

06-04-2014, 08:07 AM	#1
BlownSS Drives: 2010 Camaro SS/RS Join Date: Oct 2009 Location: Lincoln Nebraska Posts: 1,754	sct datalogging AFR with AEM UEGO.....What equation? I am doing some datalogging to finalize my tune with JRE. I have the aem Uego installed. Gauge seems very erratic at idle. I have the gauge installed with a positive and ground to the chassis inside the cabin of the car. The AEM is conected to the SCT with a firewire. Im using the white wire from the AEM and connected to the red wire from the firewire. I am getting good readings during datalogging but it seems to vary a bit from what the gauge says at WOT. JRE wants me to be sure that they read the SAME before doing any more changes to the tune. How do I make sure that I am reading my values correctly at the gauge and the output that is seen in LIVElink? IS there an equation that has been a proven performer to set in the analog 1 position? __________________ 2010 IOM SS/RS LS3, Hennessey HPE550 Polished Magnuson TVS2300 Supercharger. 3.4 Pulley. Kooks long tube headers / high flow cats. GHL Full exhaust. ZL1 Fuel Pump/ADM FPCM. MSW Bap. JRE ZL1 Race cam with new springs/pushrods/Trunion Upgrade. FIC 850cc injectors. ZR1 Map sensor. CAI Induction. JRE Tune.

06-04-2014, 01:46 PM	#3
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	I take pictures of the computer screen and wideband then compare the numbers. Then you just add or subtract from the offset at the end of the equation to make them match. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

06-04-2014, 02:21 PM	#6
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	+10 is the offset. Take pics of the gauge and computer screen so you can see what they both are simultaneously. Take the difference and either add it or subtract it from the +10. Mine ends up being 9.8. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

06-04-2014, 02:22 PM	#7
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Although I thought it was supposed to be v/.5+10. I could remember wrong. Haha.. nm it's the same thing. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

06-04-2014, 02:44 PM	#8
BlownSS Drives: 2010 Camaro SS/RS Join Date: Oct 2009 Location: Lincoln Nebraska Posts: 1,754	went out and attatched the ground to the block.......much less erratic readings........after some watching both under load.......i concluded mine needs to be at 11.1 to match Does that seem odd? __________________ 2010 IOM SS/RS LS3, Hennessey HPE550 Polished Magnuson TVS2300 Supercharger. 3.4 Pulley. Kooks long tube headers / high flow cats. GHL Full exhaust. ZL1 Fuel Pump/ADM FPCM. MSW Bap. JRE ZL1 Race cam with new springs/pushrods/Trunion Upgrade. FIC 850cc injectors. ZR1 Map sensor. CAI Induction. JRE Tune.

06-04-2014, 03:13 PM	#9
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	A little bit. You should probably be around .2 off. I'm gonna guess your ground swap there did more harm to the signal than good. I have mine grounded to a bolt in the fusebox side of the dash. It's hard to tell what you mean by erratic. It should be swinging back and forth around 14.68 all the time. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

06-04-2014, 03:24 PM	#10
BlownSS Drives: 2010 Camaro SS/RS Join Date: Oct 2009 Location: Lincoln Nebraska Posts: 1,754	FML I guess i will just call ted and see what he suggests. Why is there always "one more thing" to do to get it dialed in? LOL........I did notice since the last adjustment to the fuel in the tune, it seems to be running richer and backfires after letting off of full throttle every so often __________________ 2010 IOM SS/RS LS3, Hennessey HPE550 Polished Magnuson TVS2300 Supercharger. 3.4 Pulley. Kooks long tube headers / high flow cats. GHL Full exhaust. ZL1 Fuel Pump/ADM FPCM. MSW Bap. JRE ZL1 Race cam with new springs/pushrods/Trunion Upgrade. FIC 850cc injectors. ZR1 Map sensor. CAI Induction. JRE Tune.

06-06-2014, 01:12 PM	#11
axis Search Ninja Drives: 2010 Black 2SS/RS A6 Join Date: Oct 2009 Location: Central Ark Posts: 7,183	You might consider switching to a better software, especially being FI. __________________ 2010 Black 2SS/RS A6 Halltech CF 102 fed GPI modded intake manifold Bo (knows) White ported TB Kooks LT's/ Dynomax VT Pfadted (springs/sways) Dyno tuned by Rhino and GPI I once parallel parked a train.

06-07-2014, 10:02 AM	#12
Z1 Dunn Account Suspended Drives: orange ss camaro Join Date: Dec 2013 Location: louisiana Posts: 30	I have sct on my FI and it's been 9.90's with no weight reductions. sct does work