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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old July 9th, 2018, 13:13   #1
mhintlian
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Join Date: Apr 2010
Location: Frazier Park , Ca
TDI(s): 03 Golf GLS
Default EGR blocked need to tune for CEL

I am planning to block the EGR from the exhaust on my 03 ALH TDI and am curious about the tuning needed when doing this. I have Ross Tech software can this do the tuning needed for blocking off the EGR and if so what are the settings for this? All replies are greatly appreciated.
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Old July 9th, 2018, 13:25   #2
BobnOH
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Fuel Economy: 50/45/35
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No, I don't think so. The tuner will make it go away altogether, which is what you want.
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Old July 12th, 2018, 11:52   #3
mhintlian
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Thank you for your response. So all I would have to do is just delete the error code when plugged into Ross Tech?
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Old July 12th, 2018, 12:10   #4
BobnOH
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Sure, try that, but chances are the code will come right back.
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Old July 12th, 2018, 12:13   #5
Vince Waldon
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Quote:
Originally Posted by mhintlian View Post
I have Ross Tech software can this do the tuning needed for blocking off the EGR
No, by "tuner" the poster above is referring to a vendor who sells "tunes"; software modifications to your engine ECU's firmware that are generally bought to increase performance but can also be purchased to defeat the monitoring of various systems, like the EGR.

Malone, Kerma, and Rocketchip are all well-known tune vendors here, and they also rent/sell the hardware that plugs into your OBD2 port to transfer the software update to your ECU.

Without this step you will have a permanent Check Engine Light, should you make any modifications to the EGR system.

VCDS is a tool designed to modify parameters that VW provides generic access to; defeating the EGR monitoring system is not one of them. On your particular engine it is possible to use VCDS to lower the activity of the EGR cycle, but not to turn it off completely.
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Note: The above is to the best of my knowledge- but at the end of the day simply interweb opinion, worth EXACTLY what you paid for it, and if used done so at your own risk.

Last edited by Vince Waldon; July 12th, 2018 at 12:18.
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Old July 12th, 2018, 12:35   #6
ktmkris
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I have deleted the egr on my 2005 tdi, it throws a cel every time I drive it. A tune will remove it completely
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