Lamda issues after speedtech install

[Bmxr152]

So I have the speedtech kit installed and a basic tune from v8bait to get me going. I'm running brand new ntk sensors. Injectors are index 12 and brand new. The issue I see which I never had with the twins is that bank 1 lamda sensor is jumpy and not flat. Bank 2 is similar but not nearly as bad. Anyone have any ideas? Maybe ignition related?

datazap.me | Bmxr152 | Speedtech kit

datazap.me

 

[d8rknight]

I’m in the same boat as y’all oem o2’s bank 1 issues maybe 3800miles on kit

 

[KClemente]

Make that 7(?) of us. I'm using the Exhaust gas pressure correction tables from Jeff.

Gonna try setting c_conf_cat and c_nr_conf_cbk_ex to different values to try and delete bank 1 o2.

Bank 1/2 STFT Difference

 

[Jewgo]

I'm tuned by Jake, with Jeff's advs. No issues

Did you have to splice and reconnect any wires? If so, do the inner coated wires from each match?

 

[d8rknight]

I am tuned by V8bait as well and i dont blame the tuner at all as he got my PI tables solid and the tune itself is flawless minus the bank 1 craziness and I'm on built motor.

 

[pysical]

Did you have to splice and reconnect any wires? If so, do the inner coated wires from each match?

Jeff told me he normally has parts in stock to make a plug and play harness. Basically he would do the cutting and attaching the pigtails to the end of them. But he was out of stock so is just sending me the sensors. He said he solders them and has never had anyone report back with an issue. I have many old o2 sensors so I am just going to cut an old one and crimp them together. He sent me a PDF explaining everything to do.

 

[Jewgo]

Jeff told me he normally has parts in stock to make a plug and play harness. Basically he would do the cutting and attaching the pigtails to the end of them. But he was out of stock so is just sending me the sensors. He said he solders them and has never had anyone report back with an issue. I have many old o2 sensors so I am just going to cut an old one and crimp them together. He sent me a PDF explaining everything to do.

Mind sharing that PDF? My only concern is matching wires correctly between the ADV sensor and OEM plug. If i know how to correctly match wires the rest is cake walk.

 

[Jake@MHD]

Make that 7(?) of us. I'm using the Exhaust gas pressure correction tables from Jeff.

Gonna try setting c_conf_cat and c_nr_conf_cbk_ex to different values to try and delete bank 1 o2.

Bank 1/2 STFT Difference

This will not work. I ended up spending quite a bit of time on SB o2 for these cars, and it's been a very long road with tons of changes, cal and prg (and still not perfect). Once the remaining few hurdles are sorted, I'll need a very specific group of testers. Have a standalone external wideband will be required, as will extra o2 bungs in your downpipes.

Btw, you would never try and delete bank 1

 

[Jewgo]

This will not work. I ended up spending quite a bit of time on SB o2 for these cars, and it's been a very long road with tons of changes, cal and prg (and still not perfect). Once the remaining few hurdles are sorted, I'll need a very specific group of testers. Have a standalone external wideband will be required, as will extra o2 bungs in your downpipes.

Btw, you would never try and delete bank 1

Would this be the Single turbo logic i've heard about that will get rid of pre-turbo o2's?

 

[GreyNBlueE92]

This will not work. I ended up spending quite a bit of time on SB o2 for these cars, and it's been a very long road with tons of changes, cal and prg (and still not perfect). Once the remaining few hurdles are sorted, I'll need a very specific group of testers. Have a standalone external wideband will be required, as will extra o2 bungs in your downpipes.

Btw, you would never try and delete bank 1

Are you saying single o2 as of right now doesnt work 100%? I enabled it temporarily when i messed up my rear o2 sensor installing down pipes. Still enabled due to being cheap... And winter.

Was going to get an external wideband for the second bung eventually. For failsafe purposes

Edit: im still on twins if it matters

 

[Jake@MHD]

Single rear is fine. I am talking about full single bank o2 for ST cars that want the main lambda in the DP

 

[Jake@MHD]

Would this be the Single turbo logic i've heard about that will get rid of pre-turbo o2's?

Yes it is

 

[Jewgo]

Yes it is

Any ETA by any chance?

 

[pysical]

Got busy yesterday so I did it today.

I didn't get time to go do a 3rd gear log so here is a second gear. https://datazap.me/u/pysical/adv-sensors?log=0&data=3-23-24-25

The second log attached to that is just some neighborhood driving because I noticed that my AFRs did not max out when letting off the gas. I have had this happened before not to long ago and it just went away on its own. So I am going to give it some more driving time and see if that helps. If not maybe something needs to be changed in the tune. I did MHD option ADV o2 sensors.

TLDR; ADV sensors fixed my issue.

 

[Jewgo]

Awesome! I have my ADV sensors coming in tomorrow. I'll report back with the results as well.

 

[doublespaces]

I bought the last set that @Chris@Motiv sold over on n54tech before he was officially with motiv and I've never had a single ADV sensor issue. These were sold and made by Chris.

 

[r0nd3L]

Awesome! I have my ADV sensors coming in tomorrow. I'll report back with the results as well.

Curious on your ADV results!

I'm in the process of installing Speedtech kit and I want to make sure I have everything. I currently have NTK, but considering getting ADV.

 

[Blackarrow335i]

Got busy yesterday so I did it today.

I didn't get time to go do a 3rd gear log so here is a second gear. https://datazap.me/u/pysical/adv-sensors?log=0&data=3-23-24-25

The second log attached to that is just some neighborhood driving because I noticed that my AFRs did not max out when letting off the gas. I have had this happened before not to long ago and it just went away on its own. So I am going to give it some more driving time and see if that helps. If not maybe something needs to be changed in the tune. I did MHD option ADV o2 sensors.

TLDR; ADV sensors fixed my issue.

Did you get your afr on decal fixed? I have the same issue.

 

[koalabbr]

Im also running the speedtech kit with an Garrett GTW36 BB turbo and have lambda issues.

But i get 2c31 / 2c32 error codes. after lambda reset in open loop all looks fine, but after a few hundret miles i get the same errors. i see on my AK-motion data display that first one lambda starts to run out of control (1.2 or above), then fall to about 0.8 and then throw the error.

switched already from ADV o2's to NTK in the front, rear o2s are also replaces with new ones. injectors are brand new index 12. it happens also on normal driving.

Maybe someone had that issue and find a solution for that?

 

[N54135iAT]

Bank 1 also running richer then Bank 2 all the time for me. Had ADVs for 5k miles replaced them with brand new ones and also brand new index 12s and its still the same. When i reset adaptions bank 1/2 run pretty similar but after some miles bank 1 starts to run richer then bank 2 again

 

[pysical]

Did you get your afr on decal fixed? I have the same issue.

After Chris at Motiv fixed my tune to incorporate it yes it is fixed. Car is running how it should finally. I would contact him for ADV o2 sensors so he will put the changes into the flash for you. The MHD ADV option is for JB4 users.