AEM UEGO 30-4100 Air Fuel Ratio Gauge - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

DragRacerX · 05-10-2014, 02:46 PM

Originally I purchased an Auto Meter narrow band air fuel ratio gauge. It was a very distracting light show. It went from one end of the scale to the other with no apparent pattern. Several people suggested the AEM UEGO 30-4100 Air Fuel Ratio Gauge. The videos of it that I saw on YouTube all showed a fairly steady reading at idle or constant speed. I had both gauges professionally installed, I am seeing similar variation with the AEM. At an idle it fluctuates from 13.7 to 15.7; that seems too wide of a variance to me. The same is true cruising on cruise control on a flat stretch of road. Engine vacuum & RPM are steady. Any help or suggestions are welcomed. At this point I am seriously thinking of replacing it with a coolant temperature gauge... I will post a video as soon as I figure out how to do it! Inside the LS3 motor, everything is stock, all modifications are listed in my signature.

Bo White · 05-10-2014, 02:51 PM

The fuel injection is programed to go rich to lean and average 14.7:1 or so AFR. It goes into open loop and then it doesn't sweep back and forth but in closed loop it is supposed to.

DragRacerX · 05-10-2014, 03:50 PM

Here is the YouTube link to my video:

http://youtu.be/LBsi56dkKhA

2SSCAMARO · 05-10-2014, 05:28 PM

That is perfectly normal. It is a WIDEBAND sensor, not a narrowband. Narrowband sensors (the car's O2 sensors) are designed to measure the afr in closed loop operations.....idle, cruise, light acceleration and are very inaccurate in open loop or WOT conditions. The wideband sensor is designed to accurately measure afr during open loop or WOT operations. If you view your gage when you depress the accelerator pedal, the readout will become very steady at the commanded afr.

Unreal · 05-10-2014, 06:35 PM

Perfectly normal. If you don't want it to do that then have your tuner lock the car into open loop, but that is dumb just to avoid what the car should be doing.

Trob85 · 05-10-2014, 07:22 PM

That's normal that's what both mine do

05-10-2014, 02:46 PM	#1
DragRacerX Drives: 2017 ZL1 A10 HBM & 2012 2SS M6 IBM Join Date: Jul 2009 Location: Dallas, GA Posts: 267 View My Garage	AEM UEGO 30-4100 Air Fuel Ratio Gauge Originally I purchased an Auto Meter narrow band air fuel ratio gauge. It was a very distracting light show. It went from one end of the scale to the other with no apparent pattern. Several people suggested the AEM UEGO 30-4100 Air Fuel Ratio Gauge. The videos of it that I saw on YouTube all showed a fairly steady reading at idle or constant speed. I had both gauges professionally installed, I am seeing similar variation with the AEM. At an idle it fluctuates from 13.7 to 15.7; that seems too wide of a variance to me. The same is true cruising on cruise control on a flat stretch of road. Engine vacuum & RPM are steady. Any help or suggestions are welcomed. At this point I am seriously thinking of replacing it with a coolant temperature gauge... I will post a video as soon as I figure out how to do it! Inside the LS3 motor, everything is stock, all modifications are listed in my signature. __________________ 2017 ZL1 Hyper Blue Metallic, A10 Trans, CF Hood, NAV, PDR, Sunroof, aFe Momentum GT CAI, Vmax Motorsports TB, ARH LT CAV8-16200300FSQWC (Daily Driver) 576 RWHP/575 RWTQ 2012 2SS/RS IBM Technostalgia LED taillights, Magnuson TVS2300 & 3.40 Pulley, Vengeance Racing VRPD-2 Cam Kit, ZL1 Fuel Pump, Injector Dynamics ID850 Injectors, Forced Induction Interchiller, Cold Air Inductions CAI, BBK 40210 LT Headers & Free Flow Cats, MBRP S7022409 T409-Stainless Steel 3" Dual Cat Back Exhaust System, Lingenfelter ZR1 Dual Disc Clutch Kit, ZL1 Brake Kit Rotors & Calipers 628 RWHP/596 RWTQ / A.C.E.5

05-10-2014, 02:51 PM	#2
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	The fuel injection is programed to go rich to lean and average 14.7:1 or so AFR. It goes into open loop and then it doesn't sweep back and forth but in closed loop it is supposed to. __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

05-10-2014, 03:50 PM	#3
DragRacerX Drives: 2017 ZL1 A10 HBM & 2012 2SS M6 IBM Join Date: Jul 2009 Location: Dallas, GA Posts: 267 View My Garage	Here is the YouTube link to my video: http://youtu.be/LBsi56dkKhA __________________ 2017 ZL1 Hyper Blue Metallic, A10 Trans, CF Hood, NAV, PDR, Sunroof, aFe Momentum GT CAI, Vmax Motorsports TB, ARH LT CAV8-16200300FSQWC (Daily Driver) 576 RWHP/575 RWTQ 2012 2SS/RS IBM Technostalgia LED taillights, Magnuson TVS2300 & 3.40 Pulley, Vengeance Racing VRPD-2 Cam Kit, ZL1 Fuel Pump, Injector Dynamics ID850 Injectors, Forced Induction Interchiller, Cold Air Inductions CAI, BBK 40210 LT Headers & Free Flow Cats, MBRP S7022409 T409-Stainless Steel 3" Dual Cat Back Exhaust System, Lingenfelter ZR1 Dual Disc Clutch Kit, ZL1 Brake Kit Rotors & Calipers 628 RWHP/596 RWTQ / A.C.E.5

05-10-2014, 05:28 PM	#4
2SSCAMARO Drives: 2010 Camaro Auto Join Date: Mar 2010 Location: Fl Posts: 1,164	That is perfectly normal. It is a WIDEBAND sensor, not a narrowband. Narrowband sensors (the car's O2 sensors) are designed to measure the afr in closed loop operations.....idle, cruise, light acceleration and are very inaccurate in open loop or WOT conditions. The wideband sensor is designed to accurately measure afr during open loop or WOT operations. If you view your gage when you depress the accelerator pedal, the readout will become very steady at the commanded afr. __________________ Just livin' life

05-10-2014, 06:35 PM	#5
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Perfectly normal. If you don't want it to do that then have your tuner lock the car into open loop, but that is dumb just to avoid what the car should be doing. __________________ Nick Corvette Z06 -1200ish rwhp

05-10-2014, 07:22 PM	#6
Trob85 Svt lol Drives: 2011 ss inferno orange blown Join Date: Jan 2012 Location: Topeka Posts: 2,312	That's normal that's what both mine do __________________ plasti dip is not a mod.......and a cold air intake doesn't make you fast!