Kevinski
Veteran Member
Tried the egr mod on a 2004 per tdi faq instructions. It would not accept the login code of 12233. Am I doing something wrong? I have the latest version of vag-com/hex com. Thanks, Kevin
egr mod on 2004?
- Thread starter Kevinski
- Start date
DeathEngine
Veteran Member
From what im told, there is currently no egr mod for the 04 tdis. Not yet anyway,.
Uwe
Vendor , w/Business number
- Joined
- Feb 24, 2000
- Location
- Lansdale, PA, USA
That's correct. The 2004 PD engines use an EDC-16 engine management system. We think we've identified the adaptation channel which would tweak the EGR, but the standard Login won't allow changes to that channel.
Futhermore, since these cars have an Oxygen Sensor in the exhaust (to provide a feedback loop so the ECU can supply an optimal amount of EGR to keep NOx emissions to a minimum), even if EGR tweaks were possible, they would likely result in Check Engine lights and DTC's.
-Uwe-
Futhermore, since these cars have an Oxygen Sensor in the exhaust (to provide a feedback loop so the ECU can supply an optimal amount of EGR to keep NOx emissions to a minimum), even if EGR tweaks were possible, they would likely result in Check Engine lights and DTC's.
-Uwe-
Kevinski
Veteran Member
Thank you both for the response(s). Was not aware of the O2 sensor either. I wonder if this feedback system will help reduce the possibility of intake manifold clogging?
Just a side note, they do make "dummy" O2 sensors for at least my GMC pick-up. It basically tells the computor "all is well" even if no catalytic convertor is in place. I wonder if this is an option for trying to get around the problem.
BTW, the latest version of Vag-Com seems alot easier to use, nice layout, nice features, great product. Thanks again, Kevin
Just a side note, they do make "dummy" O2 sensors for at least my GMC pick-up. It basically tells the computor "all is well" even if no catalytic convertor is in place. I wonder if this is an option for trying to get around the problem.
BTW, the latest version of Vag-Com seems alot easier to use, nice layout, nice features, great product. Thanks again, Kevin
Uwe
Vendor , w/Business number
- Joined
- Feb 24, 2000
- Location
- Lansdale, PA, USA
The post-CAT sensor on gassers is not a very sohpisticated sensor. Typically a "switching" sensor (as almost all 02 sensors were until a very few years ago). It's also not user for mixture feedback much (if at all). It is, as you've said, an "All is well" sensor. That means it's pretty easy to fake the signal.
My guess is that the 02 sensor used on EDC-16 engines is a wide-band sensor (meaning it gives a voltage proportinal to the oxygen content of the exhaust gasses rather than an on/off signal indicate the presence or absense of oxygen).
I don't believe that you will achieve the desired result by trying to fake this signal using a commerically available post-cat "dummy" sensor.
-Uwe-
PS: Thanks for the kind words. We strive to continually improve the product.
My guess is that the 02 sensor used on EDC-16 engines is a wide-band sensor (meaning it gives a voltage proportinal to the oxygen content of the exhaust gasses rather than an on/off signal indicate the presence or absense of oxygen).
I don't believe that you will achieve the desired result by trying to fake this signal using a commerically available post-cat "dummy" sensor.
-Uwe-
PS: Thanks for the kind words. We strive to continually improve the product.