AEM WBO2 Interfacing with HP Tuners through EGR on 0411 Truck ECU

I wasn't able to get the serial communications working between my AEM 30-4110 Wideband O2 gauge and HP Tuners, so I went a different route.
In this video I show what I did to get the wideband interfaced with HP Tuners by wiring the 0-5V analog output into the EGR circuit of the truck.
I apologize for the poor audio quality at the end of the video, it was being recorded through my laptop microphone and didn't turn out very well.

[@DefenistrationAlley]

This has been immensely helpful in my turbocharged 4.3 V6 s10 project! (using the same ECU) I appreciate this valuable information.

[@StationroadRatrods]

Coming up on 10k Randy!! That’s awesome! I cannot tell you how many times I’ve reference this and your other videos on tuning my LS. Good work man.

[@LowbuckLS]

Thanks sir!

[@StationroadRatrods]

@@LowbuckLS you got it buddy. The truck is sweet, how’s it treating you?

[@Mattvardaman]

With your video I was able to get this going with the MPVI2 and the newer style AEM X series wideband. At first when I started the truck with the wideband powered up the truck would start and then it would die after 10 seconds. It would run fine with the wideband power wire disconnected. I missed zeroing out an airflow table for egr, but I got it lined out after thinking about it for an hour. Thanks for the detailed videos!!

[@jacobhenry1229]

Thank you for this comment I was having the same issue with mine but that fixed it!

[@Mattvardaman]

@@jacobhenry1229 I’m glad it helped you! There aren’t any really detailed videos out there showing exactly what to do, so I shared my problem. It was baffling at midnight in the shop when the truck kept dying.

[@Swaps-n-Stuff77]

This video is how i found your channel and have been a subscriber ever since

[@LowbuckLS]

Swaps-N-Stuff good to hear, thanks! I subscribed to your channel as well.

[@TwinTurboRamAir]

Good video thanks for taking the time to make it.

[@amandaquintana2741]

Great video. My wideband is working with HP perfectly now! Thanks.

[@LowbuckLS]

Great, glad to hear my video was helpful, should have more coming soon.

[@georgiaboy1579]

Do you have mpvi2?

[@danielbennett5283]

Great video! Very helpful to all that want to get this setup through egr. It worked for me. *3.008+7.35 is the math parameter I used for the innovate mtx-l. Hope this helps someone.

[@kevindrury8390]

Cool just got me a HP. Hope I remember this when it is swap time

[@chrisweaver6118]

Awesome video... I'm gonna try this

[@jovonmartin5169]

Awesome video. I strip down my harness awhile back but I added pin 55 egr brown wire back to the connector and wired in my white wire from my AEM wideband and set up parameters but my voltage is reading zero in HP tuners.

[@chevy4life203]

Mine too let me know if you found a solution

[@chevy4life203]

Hey I just figured it out. I know years ago under the engine tab(general) in the editor you were able to enable/disable the egr. I’m assuming in one of the hptuners updates it got moved go to the editor and click (edit),(navigator), (exhaust),(gas recirculation),(general),(egr enable)and then it should allow you to enable it so do that and flash the pcm and it should work.

[@bertvisser6423]

Ponoka guy again,lol. Wanting to let you know the value of your videos. I did buy hp tuners now and am in the stage of afr logging and correcting(learning about it before buying). So consider me 3 years behind you lol. Learned a ton from this video and the attempted serial logging of afr. Loving hp tuners so far,so much more fun then just wrenching !!!!!

[@LowbuckLS]

Nice, glad you’re getting good value out of the videos!

[@austinboard1491]

Very good video. I was able to get mine to work but I went through the AC Pressure Sensor.

[@LowbuckLS]

Thanks, good to here you were able to get yours working with the A/C pressure sensor.

[@austinboard1491]

@@LowbuckLS okay so I'm wanting to put the AEM x series boost gauge on on my car. I do not have a EGR system to use because chevy did not put egr system on camaros from 99-02. So I was considering going through the Fuel Tank pressure sensor for a 5v reference signal. I will be deleting the evap system on my car so the sensor will not be needed. I'm assuming the equation would be the same in the tuner but just use the pid for the tank pressure system?

[@LowbuckLS]

Austin Board yes that’s correct, the math will be the same

[@austinboard1491]

Lowbuck LS awesome thanks!

[@RAWRMotorsports]

Gonna try this on the 02 escalade tomorrow 🤞🤞

[@venomousproductions7539]

Great video, thanks for the info...

[@codjunky8865]

Great video low Buck LS. Can you do the same wiring using the mass airflow 5 volt reference and doing the same steps you did for the EGR valve

[@tennesseetreasures124]

@Lowbuck LS I have Dakota Digital gauges and their BIM 13-2 module. The gauges get their signal from a white wire. I need to get that information over to my scanner as well. Do I just splice that wire and run it to the EGR signal wire on the LS ecm?

[@bioschip1]

Awesome video. Just curious if in the WBO2 Error math if you should add the offset 9.9 like in the AEM WBO2 parameter instead of 10? So 100*(([2811.10]*2+9.9?

[@LowbuckLS]

Yes technically you are correct I should have used 9.9 in the Error math formula rather than 10

[@Mattvardaman]

Ok, I followed your instruction and setup the scanner channels, config, and graphs. Where did you run the sensor ground(Brown analog negative) wire from the aem wideband? I have a new X series wideband, so i had to change my math formula. Did you run the sensor ground (analog -) to the same ground as the wideband controller? or egr sensor ground?

[@user-jx8bv6ls7d]

great video, now what is the ecu pin for de egr cable you cut ?

[@macklyons6970]

Do you have to adjust the math so that the Error% matches in the Time graph and the histogram graphs? Thanks for the help

[@silentbravo]

Great video, Thanks

[@LowbuckLS]

Your very welcome, glad you found it helpful, should have more coming soon.

[@jasons3191]

I just did this same process, except I used my MAF 0-5v since I am running speed density and don't have a MAF anymore. I haven't even tried it out yet, but I am confident that it should work fine. Just have to use the MAF inputs instead of EGR inputs.

[@LowbuckLS]

Jason S great idea, I hadn’t thought of using the MAF input.

[@jasons3191]

@@LowbuckLS I thought I was being slick, turns out there is no voltage channel for the MAF, only frequency. I guess I will just have to find the EGR wires, mine is an 05' so there was no egr from the factory.

[@LowbuckLS]

@@jasons3191 oh that makes sense. The other option is to use the wiring for the fuel tank pressure sensor it uses 0-5v. I adapted mine to an Amazon pressure sensor to sense fuel rail pressure instead of tank pressure but there’s no reason you couldn’t wire your wideband O2 into it

[@84shortbed]

I greatly video, I got my sensor and guage all wired up but its not picking up a signal on the data log. I enabled egr in the tune and hooked white wire to brown at egr. What do you do with the brown 5v signal negative?

[@ronnieshadowen7277]

I know this is a little old but I’m curious if you’re using a Wideband Controller in this video? Or if you’ve just hard wired the Wideband Sensor. I’m trying to do something similar using a different program then HPT. I have spliced my Wideband Heater - and Heater + wires into my Narrowband sensor. But I’m stuck on the Black, Yellow and Red wires. Assuming Black is ground, Red is Keyed/Fused Hot and Yellow being the wire I need to splice to my egr circuit?

[@LowbuckLS]

Ronnie Shadowen I’m using an AEM wideband controller/gauge so I’m afraid I won’t be much help with regards to sensor wiring. Mine has a factory made harness to connect the sensor to the controller/gauge.

[@dylansutherland6062]

awesome video! thanks

[@LowbuckLS]

Your welcome, glad you liked it.

[@dylansutherland6062]

Lowbuck LS was really skeptical on how to set this up and couldn't find any solid info on it. Keep the vids coming man! Cheers!

[@georgiaboy1579]

Will this work with MPVI2 ?

[@boosted0079]

Easy enough to connect up that way. How would you got about changing into to lambda instead of afr?

[@Warren_Williams]

Lambda= (voltage x 2 +10) / 14.64

[@WizardRench]

Forgive me for what may be a stupid question, but the 5v reference wire is from the WBO2 controller correct? Not the actual sensor signal wire?

[@LowbuckLS]

minigunz94 yes the wire I am connecting to is the 0-5V output from the controller not the sensor.

[@510CurtDawg]

Im gunna try to do this to my mopar 392 crate ecu.... i gotta check to see if i have a unused input pin tho....ecu is buried under dash...gotta pull it out to see

[@justinanderson860]

How do u get the real time tuneing on gen 4

[@Busa0069]

Nice vid, you and Tucker helped me out getting it hooked up and see EGR voltage but can’t get AFR displayed on the scanner chart even after doing the maths and chart layout configure. Does it matter which group it is in something like that ? Obviously missed a major step, go at her again tomorrow.

[@LowbuckLS]

Busa0069 I don’t think it matters what group it’s in... if you continue having trouble tomorrow let me know and I’ll see what I can do to help.

[@Busa0069]

Got it figured out, couldn’t see the * for multiplying the matth you were using, thought you were using an x. Now time to learn how to do some logging. Thanks

[@LowbuckLS]

Busa0069 glad you got it working.

[@mcmillinjustin]

Do you think you would mind making a slower detailed version of programming the wideband on the laptop again? I want to add one to my 5th gen Camaro so I can do email tunes instead of using a sniffer so they don't have to make it richer. I wouldn't be afraid to send you money so that I could get it correct, if you don't mind making a video

[@RAWRMotorsports]

So we only run 1 wire to egr ? Then ground ?

[@chrisbryant1657]

Randy, where did you wire the brown 0-5 V analog output negative (ground wire) from AEM gauge? Just inside the truck somewhere? Also, it looks like the brown wire on your EGR that you spliced into with the AEM gauge white wire (0-5 V analog output +) is the EGR pintle position. Is this correct?

[@LowbuckLS]

Yes that’s correct and I just connected the ground wire to a metal part of the chassis of the truck, there are some metal structural supports under the dash that I ran the ground to.

[@chrisbryant1657]

@@LowbuckLS Thanks Randy for your quick reply! I have a 98 Chevy and the egr valve wiring looks the same as your truck according to my gm service manual wiring diagrams. Thanks again and I enjoy your videos. I wanted to buy the standard mpvi but its no longer available. HP Tuners is telling me the only product currently available for my 98 z28 Camaro is the MVPI2.

[@ridgetippit4570]

Awesome video! Where does the 5v ground go?

[@LowbuckLS]

The 5v ground can just get connected to any ground point (metal parts) of the vehicle or to the battery negative post

[@trueside0812]

Can you still wire into the egr if the plug is just open? Usually the egr components are removed from using aftermarket headers

[@93paxon]

I assume you mean "if the connector is unplugged" and if so, yes. The brown wire off that connector goes back to the PCM, BLUE connector-Pin 55 which is "EGR Pintle Position Sensor Signal". This is the 0-5v output signal from the PCM that you need.

[@920PC]

Any idea what pin that wire goes to on the PMC as my truck does not have EGR from the factory but I still want to use this method.

[@920PC]

P59 PCM 2003 Silverado 5.3L = EGR Position / EGR Pin = C1 ~Connector 1~ (Blue) Pin Number 55

[@LowbuckLS]

Sorry I'm a little slow responding to comments lately, looks like you got it figured out, thanks for sharing this info.

[@chrisbryant1657]

Low buck, what year is your truck? I have a 1998 z28 and I recently purchased an AEM 30-0300 wb O2 sensor. Trying to figure my options. Thanks

[@LowbuckLS]

My truck is a 2000 model year

[@chrisbryant1657]

@@LowbuckLS Where did you wire the 12v ignition source to for the WB? Which fuse?

[@bmon725]

did you have to do anything with the ground to the wideband or is the +5v wire alone adequate?

[@LowbuckLS]

I didn’t do anything special with regards to the ground, just ran the black wire from the wideband gauge to ground, I believe the harness between the gauge and the sensor already has a ground wire in it.

[@bmon725]

@@LowbuckLS thank you! Great video!

[@JohnnyAnderson1]

I have voltage to the EGR sensor, and copied everything you did but the wideband reading is just stuck on 9.9 and will not change when running. There also is no line on the graph

[@JohnnyAnderson1]

I went stright to pin 55 on the blue connector and wired the white wire from the AEm guage directly into it...

[@2001bullitt1861]

Hey Randy, question if you could help. I followed this video and got the AFR on point for idle but where would you adjust for when it reaches it's max reading? To clarify, on my AEM WBO2 I'm showing 10.3-10.4 AFR live, but in my datalogs it's showing 11.7afr. any input on which part of the PID needs to be corrected?

[@LowbuckLS]

Is your WBO2 the same model as the one I'm using? If it isn't you may need to tweak the formula I used a bit. Where I enter the formula at around 10:30 in the video and I multiply the variable by 2 and add 10, you can try adjust those numbers slightly. If it agrees when you're at idle, i.e if the AEM reads 14.7 and your logs read 14.7 but is out at WOT, I'd increase the 2 by a bit, in other words, multiply the variable by 2.1 or something then add 10. This will make the reading in the logs change by 2.1 for every volt the output from the AEM changes. If it's out by an equal amount at idle and at wide open throttle, adjust the 10 part of the equation, this will shift the reading in the logs up or down to match the AEM reading. Hope this helps, I'm not great at explaining math.

[@2001bullitt1861]

@@LowbuckLS sounds good brotha thanks, mines the aem x series wbo2. Thanks for the reply.

[@LowbuckLS]

@@2001bullitt1861 yeah I just looked up the manual for the X series, it uses a different scale. If you multiply the variable by 2.375 and add 7.3125 (instead of me multiplying by 2 and adding 10) it should get you pretty darn close.

[@2001bullitt1861]

@@LowbuckLS thats awesome man! Thanks for going the extra mile to look that up! I didn't even recall there being a scale in the instructions. Thanks bud

[@shawnwimberly9294]

Did either of you guys get your aem x series to jive with that egr channel? I've tried both the math from the video, and now the aem math ( which was in the directions and gave the exact numbers you found) I'm still getting two completely different readings as far as what the scanner sees and what my wideband indicates.

[@gregs9283]

Randy is wiring the wide band serial just not a option my pcm is hidden up inside the dash up and behind the a/c evaporator on a 1957 chevy its like the car was built around the pcm, I thought i had the greatest idea mounting it there until now. thanks for any help you can give me

[@LowbuckLS]

Greg S I had tried to connect it with a serial connection and couldn’t get it to work, it may have been a problem with my gauge though, it didn’t seem to be transmitting any serial data. It’s worth trying.

[@gregs9283]

@@LowbuckLS my gauge is working, the question that i can't find out is.....does the wide band data have to go through the pcm like you have done it in order to make the AFR err chart be accurate in order to adjust the VE table

[@LowbuckLS]

Greg S no it doesn’t need to go through the PCM especially if you have the MVPI Pro from HP Tuners, you can wire the gauge directly to the MVPI with no connection to the PCM

[@jerzzzeyful]

I dont have an egr valve on my 6.0 but still have the wiring ..can I splice it into the harness wiring.. would that work

[@LowbuckLS]

Eddy G yes it should work

[@jerzzzeyful]

@@LowbuckLS would you know what wire I should use.. I know its a 3 wire connector.. it would be my first attempt installing a wide band sensor...and thank you for getting back to me.. most on here dont bother.. I learn alot from your videos

[@Busa0069]

Does the EGR airflow tables need to be set to zero or the filter coefficient?

[@LowbuckLS]

My tune doesn't seem to have EGR airflow tables, it might be because I'm using the 3 Bar Enhanced OS. But basically I didn't change anything in the tune that has to do with EGR.

[@DanMcD80]

For a L31 motor with 411pcm swap with a 01 express van tune base. I had to leave egr enabled in the tune but the table zeroed out otherwise it'd go super lean and stall out as soon as truck went into Closed Loop. With egr totally disabled doesn't show the voltage from the WB

[@DefenistrationAlley]

I was having some issues with stalling, zeroing out this table helped me.

[@colebud670]

Needing a little help. I did everything to a t like you did. Only thing different is my egr is deleted. When i built and installed my motor i threw it all out and i also installed headers. All i have is the plug and im not getting any voltage on the scanner. Checked it with a multimeter and im getting voltage.

[@chrisbryant1657]

Did you ever gets yours working? I'm in the same boat 1998 z28. EGR valve removed but I still have the EGR plug available after installing headers. If you got it working, Im wondering how I need to ground the black ground wire pin 62 from the PCM to EGR since the EGR no longer plugs into the EGR valve. Thanks

[@eaglebrosgarage1407]

I have a swap and I deleted this pin. Is it 55 on blue egr Pintle position signal? 411 computer. Thanks

[@DefenistrationAlley]

I can confirm that it is pin 55 on the blue side. Just got this working in my s10.

[@chrisbryant1657]

@@DefenistrationAlley On my 98 z28 I have 5 wires to EGR. Two grounds, 5 volt reference, EGR pintle position (brown wire), and light blue egr valve control. Do I need to wire into the brown wire egr pintle position? I have the factory service manual for my 03 s10 to look at wiring diagrams but the 03's do not have egr valve.

[@georgiaboy1579]

I did everything you did in the video on my 00 Sierra. I have no reading from the EGR. Any ideas? I have Mpvi2

[@chevy4life203]

Mine too pls let me know if you found a solution

[@chevy4life203]

Hey I just figured it out. I know years ago under the engine tab(general) in the editor you were able to enable/disable the egr. I’m assuming in one of the hptuners updates it got moved go to the editor and click (edit),(navigator), (exhaust),(gas recirculation),(general),(egr enable)and then it should allow you to enable it so do that and flash the pcm and it should work.

[@colebud670]

Ive done this exact thing and that didnt change anything for me. It still isnt reading anything on the EGR Sensor

[@DanMcD80]

@@colebud670 MPVI2 with an express van tune on a 411 pcm and L31 motor I had to leave the drop down menu enabled but zeroed out the egr airflow table to keeping it from going so lean it stalls as soon as pcm swaps from OL to CL

[@colebud670]

Thanks for the rely Dan M. My problem was i was so lean it wouldnt pick it up. I dialed in the ltft and it kicked on and started working.

[@firstr8guy]

Do you have to have the Mpvi pro version or will this work on the standard Mpvi2?

[@LowbuckLS]

You don’t need the pro version, I just have the standard one

[@firstr8guy]

Thanks so much for this video. It's unbelievably helpful! I noticed you cut the signal wire. Can you splice into it instead to maintain the function of the egr or will that affect the AFR gauges operation?

[@LowbuckLS]

Andy Dorsay you can’t splice in to the wire you need to cut it, I don’t think there is a way you can keep your EGR using this method

[@firstr8guy]

@@LowbuckLS Thanks again for your help

[@ridgetippit4570]

Lowbuck LS this video is exactly why we don’t need the pro version. Awesome help. One thing where does the 2nd 0-5v wire go? Body ground? Or ground back to pcm?

[@timleonard86]

So working on limited budget can I buy just the wideband sensor and not the big $200 packages

[@LowbuckLS]

I'm not 100% sure, but I think you also need the controller which converts the millivolt signal from the sensor to a 0-5V signal that the ECU can use. It might be possible to scale the ECU to read the millivolts directly from the sensor but I've never tried it.

[@timleonard86]

Trying to create the wbO2 err math parameter have everything as you entered yet in the lower section 50121 is still highlighted in red

[@Sebastianx115]

Whats a math for ethanol

[@LowbuckLS]

So according to the manual for the 30-4110, for ethanol 0.00V is equivalent to an AFR of 6.15, and 4.99V is equivalent to an AFR of 12.28. So the formula to enter into the user math of HP Tuners would be [2811.10]*1.2285+6.15 instead of [2811.10]*2+9.9, thanks for taking the time to watch this.

[@Sebastianx115]

awesome thanks

[@Sebastianx115]

Is that the same for e85