nefmoto help please!

[a4turbo_2002]

I need to delete my rear o2s to rule out an issue im having... i have a awe giac stg3 tune. Iv got nefmoto downloaded.. what else do i need? Do i just rip my tune from the ecu, modify it and flash it back on? If someone could please walk me thru this id appreciate it! Also will i still need my o2s to b plugged in or can i remove them from the car at that point, iv heard mixed opinions

[infinkc]

lol, why not ask on nefmoto?

You wont be able to rip the tune off unless you have a galetto cable, nefmoto software does not bypass the giac encryption. Depending on how you code them out you can have them completely unplugged.

[a4turbo_2002]

lol, why not ask on nefmoto?

You wont be able to rip the tune off unless you have a galetto cable, nefmoto software does not bypass the giac encryption. Depending on how you code them out you can have them completely unplugged.

Damn it.

[Monty23]

Damn it.

I have a galetto cable if you want to borrow it.

[Jake@JHM]

What issue are you having that makes you want to delete the o2 sensors to "rule them out"?

Did you go cat-less and now you have a CEL? Or did the CEL just pop up one day and when you read it off it had something to do with o2 sensors?

There are easier ways to figuring out an issue you are having than going and deleting sensors.

[a4turbo_2002]

What issue are you having that makes you want to delete the o2 sensors to "rule them out"?

Did you go cat-less and now you have a CEL? Or did the CEL just pop up one day and when you read it off it had something to do with o2 sensors?

There are easier ways to figuring out an issue you are having than going and deleting sensors.

Lol what? No dude, and in fact i realize that the rear o2s are very important for fuel trims and they make the final corrections to fuel trims and can indeed overide the readings from the "primary o2s" they are not just for monitoring catalysts.. and yes im catless and straight piped. Now that being said i have actually been logging fuel trims and trying to find a vacuum leak that im beginning to believe is not there. I have an lt lean condition on bank 1 and missfires on 4 5 and 6. So since iv been chasing down vac leaks and bought a new maf primary o2s egts etc etc. So before you assume i have not tried everything try asking.. this is something id like to have worked out. Under the impression my tune had the o2s coded out i got rid of them. So now i have a bunch of issues i didnt have before stg3 and its getting on my nerves. Including cel for rear o2s, id like to know for sure they are not part of the issue or masking other clues to my real problem. So next time before your a dick recognise that iv probably spent 3-4k at jhm the last 2 months including a stg 4 clutch i just received from you.

[a4turbo_2002]

I have a galetto cable if you want to borrow it.

Is this for bench flashing?

[waB5S4]

Lol what? No dude, and in fact i realize that the rear o2s are very important for fuel trims and they make the final corrections to fuel trims and can indeed overide the readings from the "primary o2s" they are not just for monitoring catalysts.. and yes im catless and straight piped. Now that being said i have actually been logging fuel trims and trying to find a vacuum leak that im beginning to believe is not there. I have an lt lean condition on bank 1 and missfires on 4 5 and 6. So since iv been chasing down vac leaks and bought a new maf primary o2s egts etc etc. So before you assume i have not tried everything try asking.. this is something id like to have worked out. Under the impression my tune had the o2s coded out i got rid of them. So now i have a bunch of issues i didnt have before stg3 and its getting on my nerves. Including cel for rear o2s, id like to know for sure they are not part of the issue or masking other clues to my real problem. So next time before your a dick recognise that iv probably spent 3-4k at jhm the last 2 months including a stg 4 clutch i just received from you.

Damn son. You're right and your issue is probably rear o2s aren't coded out, pretty sure since you've done everything else (didn't see a leakdown in the list though) and I've been through the same run around.

But damn, you let him have it when he wasn't even asking for it hahahah.

[Jake@JHM]

Lol what? No dude, and in fact i realize that the rear o2s are very important for fuel trims and they make the final corrections to fuel trims and can indeed overide the readings from the "primary o2s" they are not just for monitoring catalysts.. and yes im catless and straight piped. Now that being said i have actually been logging fuel trims and trying to find a vacuum leak that im beginning to believe is not there. I have an lt lean condition on bank 1 and missfires on 4 5 and 6. So since iv been chasing down vac leaks and bought a new maf primary o2s egts etc etc. So before you assume i have not tried everything try asking.. this is something id like to have worked out. Under the impression my tune had the o2s coded out i got rid of them. So now i have a bunch of issues i didnt have before stg3 and its getting on my nerves. Including cel for rear o2s, id like to know for sure they are not part of the issue or masking other clues to my real problem. So next time before your a dick recognise that iv probably spent 3-4k at jhm the last 2 months including a stg 4 clutch i just received from you.

I was not trying to be a dick, so I apologize if I came off that way. I was simply trying to get some information as to why you were trying to have the rear o2 senors coded out and then listed the two most common reasons why people ask about having them coded out.

Are you able to post the vagcom readout of the codes you are getting? Besides the misfires, does the car feel like it is running okay? We have had customers come in because of lean codes and it turned out to be an exhaust leak before the sensors. Do you know if you have an exhaust leak?

[a4turbo_2002]

Damn son. You're right and your issue is probably rear o2s aren't coded out, pretty sure since you've done everything else (didn't see a leakdown in the list though) and I've been through the same run around.

But damn, you let him have it when he wasn't even asking for it hahahah.

Im just sick of everyone acting like people are stupid on here.. lol i reread it and realized it was a little more abrasive then neccesary but its been a long day lol my apologies to anyone offended including jake at jhm.. so you think i may be on to somethting? What are my options? Buy new ones and live with the light? Ecls dnt bother me as long as the car is getting what it wants lol i do regular weekly vag scans anyhow to look for alarming issues (like lean conditions) lol damn this s4

[a4turbo_2002]

I was not trying to be a dick, so I apologize if I came off that way. I was simply trying to get some information as to why you were trying to have the rear o2 senors coded out and then listed the two most common reasons why people ask about having them coded out.

Are you able to post the vagcom readout of the codes you are getting? Besides the misfires, does the car feel like it is running okay? We have had customers come in because of lean codes and it turned out to be an exhaust leak before the sensors. Do you know if you have an exhaust leak?

Again my apologies, long day man. Anyways the car is very very inconsistent.. some days its fine others its not, i havent had a lean condition for weeks and i thought finaly! Im down to rear o2 codes and misfires so i bought all new ignition system parts and then my damn lean code came back..

[a4turbo_2002]

And its always surged at part throttle since iv went stg3 and now it misfires when letting off the throttle you can hear the engine jerk. And it always misfires slightly at idle just random little quiet pops.

[a4turbo_2002]

Exhaust leak is unlikely before the primarys unless its at the manifold.. but i would think a manifold leak bad enough to give a lean condition would be audible right? I would think it would tick

[a4turbo_2002]

Damn son. You're right and your issue is probably rear o2s aren't coded out, pretty sure since you've done everything else (didn't see a leakdown in the list though) and I've been through the same run around.

But damn, you let him have it when he wasn't even asking for it hahahah.

what ended uo being your issue?

[a4turbo_2002]

Also keep in mind everyone this lean condition has always been on bank 1.. if it was anything but injectors or exhaust leak or electrical wouldn it b on both banks... like if it were a leak somewhere

[Jake@JHM]

Also keep in mind everyone this lean condition has always been on bank 1.. if it was anything but injectors or exhaust leak or electrical wouldn it b on both banks... like if it were a leak somewhere

It really depends on what is causing the issue. If the issue is related to bank 1 the codes will show up as bank 1. Do you have the exact codes from vagcom that you can post?

[wbrunner23]

in fact i realize that the rear o2s are very important for fuel trims

Pretty sure rear o2s are for US emissions purposes only (Euro S4s come w/o rear o2s from the factory). Faulty rear o2 will not have any negative impacts on your car other than a CEL when not coded out.

Are you sure it's not your primary o2s?

[waB5S4]

what ended uo being your issue?

My issue was that I was running with the O2 fully exposed to the air (tucked between heatshield and body) as I was setting up the wideband in the easiest possible manner on initial startups. After chasing issues for a week or more before the wheels even touched the ground I finally decided to plumb the wideband in correctly with simulated output to the narrowband. Issue resolved.

[a4turbo_2002]

Pretty sure rear o2s are for US emissions purposes only (Euro S4s come w/o rear o2s from the factory). Faulty rear o2 will not have any negative impacts on your car other than a CEL when not coded out.

Are you sure it's not your primary o2s?

This is false, not to b negative but i thought the same until i did my research.. they are pretty important if they are not coded out

[a4turbo_2002]

This is false, not to b negative but i thought the same until i did my research.. they are pretty important if they are not coded out

I have brand new primarys from jhm! Haha

[a4turbo_2002]

It really depends on what is causing the issue. If the issue is related to bank 1 the codes will show up as bank 1. Do you have the exact codes from vagcom that you can post?

Yes il post them once i get home.. to sum it up there is 2 evap codes but i have that stuff capped at the mani for testing purposes and every rear o2 code thats possible.. literally like 9 of them and misfires on 4 5 6.

[Ko4S4WI]

What does the galetto look like?

[a4turbo_2002]

What does the galetto look like?

^^

[Jake@JHM]

[Mocke]

http://www.ebay.com/itm/MPPS-V13-02-...item5d496c9b1d

That is the best Cable you can get. Comes with the software, works on bench,bootmode....


O2 delite
http://s4wiki.com/wiki/Tuning#Mono_O2_sensor

[a4turbo_2002]

http://www.ebay.com/itm/MPPS-V13-02-...item5d496c9b1d

That is the best Cable you can get. Comes with the software, works on bench,bootmode....


O2 delite
http://s4wiki.com/wiki/Tuning#Mono_O2_sensor

Ecu has to b out of the car right? With a jumper harness? This will let the nefmoto pull my giac tune

[AudiB5owner]

To make it simple.

1. Get a KKL FT232RL Cable so you can use NefMoto Flasher to get the .bin (code) ripped off of your ECU via the OBD2 port. http://www.ebay.com/sch/i.html?_odkw...L+kkl&_sacat=0

2. Open the file in WinOLS.

3. Figure out where the emissions code is and follow proper procedures for coding out (I am unsure but I am Sure that is has been covered on nefmoto)

4. Ensure checksums are correct and flash it back to your car's ECU.

Note: most tuned ECUs are encrypted but I know there are some tuners that sell bootlegged ECU software. No need for complicated galletto cables that can require ECU removal. MPPS cables I didn't like because they all come with bootleg software that I personally wouldn't trust flashing my ECU with. Nefmoto ME7 flasher works pretty well with that cable I posted above. You can also use that cable with VCDS. Our ECUs aren't the hardest to code, but you should know what you are doing before attempting to tune your own ECU. Pretty sure the ME7 has safeboot mode if it is going to brick itself!

[jibberjive]

O2 delite
http://s4wiki.com/wiki/Tuning#Mono_O2_sensor

Just a heads up, you posted the link for running a single O2 sensor instead of 2. The link to delete rear O2's is this one http://s4wiki.com/wiki/Tuning#Rear_O2_Sensors

And I second infinikc's response, nefmoto questions are better fielded on the nefmoto forum.

[FlyboyS4]

No dude, and in fact i realize that the rear o2s are very important for fuel trims and they make the final corrections to fuel trims and can indeed overide the readings from the "primary o2s" they are not just for monitoring catalysts..

Where did you find that information?

[a4turbo_2002]

Where did you find that information?

Read the bentley, its also been added to the s4wiki

[a4turbo_2002]

Let me look at work in the morning, il post a link

[Mocke]

Just a heads up, you posted the link for running a single O2 sensor instead of 2. The link to delete rear O2's is this one http://s4wiki.com/wiki/Tuning#Rear_O2_Sensors

And I second infinikc's response, nefmoto questions are better fielded on the nefmoto forum.

Sorry my bad, it was late last night overhere,

As for A4turbo 2002:
I would also suggest to search answers on Nefmoto. There are some pretty helpfull guys overthere, that will help you solv it.

[a4turbo_2002]

Sorry my bad, it was late last night overhere,

As for A4turbo 2002:
I would also suggest to search answers on Nefmoto. There are some pretty helpfull guys overthere, that will help you solv it.

Alright appreciate the advice!

[julex]

nefmoto, do the full o2 delete and be done with it .

[a4turbo_2002]

nefmoto, do the full o2 delete and be done with it .

Need to figure out exactly how to do it without ruining my tune.. Need to find someone on nefmoto who has done it with giac, not people assuming lol

I think I may have figured out the issue, pretty sure my fuel rail spacers are wrong.. I can spin my injectors around with one finger, they can move with tension from the harness lol the o rings are seated but the rail just isn't clamping on them

[Monty23]

Need to figure out exactly how to do it without ruining my tune.. Need to find someone on nefmoto who has done it with giac, not people assuming lol

I think I may have figured out the issue, pretty sure my fuel rail spacers are wrong.. I can spin my injectors around with one finger, they can move with tension from the harness lol the o rings are seated but the rail just isn't clamping on them

I had a GIAC "flashed" tune and my ecu would not let me connect to it. I had to reflash it with a new tune when I was stage 2 in order to code out EGTs and rear O2s.

[FlyboyS4]

Let me look at work in the morning, il post a link

Got that link? Which section of the Bentley manual contains the relevant information?

[rekrull]

Which section of the Bentley manual contains the relevant information?

Audi > B5 Platform > 1996 - 2002
2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): APB
24 - Multiport Fuel Injection (MFI)Oxygen sensor and oxygen sensor control behind catalytic converter, checking

[FlyboyS4]

Audi > B5 Platform > 1996 - 2002
2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): APB
24 - Multiport Fuel Injection (MFI)Oxygen sensor and oxygen sensor control behind catalytic converter, checking

Thanks

[infinkc]

Need to figure out exactly how to do it without ruining my tune.. Need to find someone on nefmoto who has done it with giac, not people assuming lol

I think I may have figured out the issue, pretty sure my fuel rail spacers are wrong.. I can spin my injectors around with one finger, they can move with tension from the harness lol the o rings are seated but the rail just isn't clamping on them

Already told you what you need to do, I've done it plenty of times on Giac tunes.