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reuselkopp Blaumann

Joined: 11/12/2002 Posts: 340 Karma: +5 / -0
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18-07-2006, 8:39 Subject: Understanding Injection Start, TDI Timing Checker |
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Hey everyone,
wann wird beim TDI Timing Checker von frühem Spritzbeginn gesprochen und wann von späten? D.h. Spritzbeginn von 30-50 früh? Von 50-70 spät? Ode"What about the other way around?"
While searching, I came across some controversial opinions.
Greetings.
Reuselkopp. Golf 4 Variant Modell 05, ASZ mit 330000, ERF Getriebe, mit Zwangskorken, Softwareanpassung von Alex Günther
Golf 3 Variant Modell 98, AFN mit 281000km, ASD Getriebe, VNT15 mit großer Dose, ansonsten alles Original / verkauft
Translated on 19-07-2026, 12:07.
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dieselmartin Profi-Schrauber


Joined: 03/13/2003 Posts: 10121 Karma: +29 / -0 Location: in der Werkstatt 2007 Volkswagen Passat Premium Support
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18-07-2006, 8:57 Subject: Understanding Injection Start, TDI Timing Checker |
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In the graphic: The top part represents morning.
/viewtopic.php?t=12788&highlight=above+is+first
Okay, please provide the German text you would like me to translate into English. I will only provide the translation. Transparency, Teamwork
... there was another T.
I don't know what the f*ck it was.
Translated on 19-07-2026, 12:07.
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reuselkopp Blaumann

Joined: 11/12/2002 Posts: 340 Karma: +5 / -0
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18-07-2006, 13:59 Subject: Understanding Injection Start, TDI Timing Checker |
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Hi,
Okay, it's quite interesting how many different opinions there are about this. I want to adjust the injection timing earlier to make my engine a bit more responsive. Currently, the injection timing is at around 50, which is exactly in the middle.
Does anyone happen to have a picture of the ESP showing exactly which screws need to be loosened in order to rotate the pump?
Greetings.
Reuselkopp. Golf 4 Variant Modell 05, ASZ mit 330000, ERF Getriebe, mit Zwangskorken, Softwareanpassung von Alex Günther
Golf 3 Variant Modell 98, AFN mit 281000km, ASD Getriebe, VNT15 mit großer Dose, ansonsten alles Original / verkauft
Translated on 19-07-2026, 12:08.
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dieselmartin Profi-Schrauber


Joined: 03/13/2003 Posts: 10121 Karma: +29 / -0 Location: in der Werkstatt 2007 Volkswagen Passat Premium Support
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18-07-2006, 14:04 Subject: Understanding Injection Start, TDI Timing Checker |
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Umm?!?!?
Can the air-fuel mixture be adjusted by turning the pump?
How are you going to do that within the regulatory limits?
That's not possible! / That won't work! / No way!
The EDC will handle it, but if you twist the pump too much and it can't compensate anymore, you'll start getting error messages.
Unfortunately, even with the electronically controlled TDI engine, you are still limited to modifying parameters through the electronics, essentially "chipping" the engine to create custom performance curves.
If you want to get some serious power, you'll need to switch to an AAZ engine or a Golf 2.
m, Transparency, Teamwork
... there was another T.
I don't know what the f*ck it was.
Translated on 19-07-2026, 12:10.
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guste100 Profi-Schrauber


Joined: 07/27/2004 Posts: 2400 Karma: +437 / -0 Location: Mitte Schleswig Holsteins 2007 Volkswagen Passat Premium Support
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18-07-2006, 14:44 Subject: Understanding Injection Start, TDI Timing Checker |
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dieselmartin wrote: | Unfortunately, even with an electronically controlled TDI engine, you only have the possibility of modifying things through the electronics, meaning you can "chip" it to create your own performance curves.
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Or, to put it another way: "adaptation channels."
Translated on 19-07-2026, 12:11.
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reuselkopp Blaumann

Joined: 11/12/2002 Posts: 340 Karma: +5 / -0
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18-07-2006, 14:53 Subject: Understanding Injection Start, TDI Timing Checker |
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Okay, so it's not possible then. I thought that would work. So, can only changes be made by modifying Block 4? Do I have enough leeway to go all the way up to the upper limit without damaging the pump? What is the optimal injection timing for good spray performance, fuel efficiency, and yet not harmful to the engine? Golf 4 Variant Modell 05, ASZ mit 330000, ERF Getriebe, mit Zwangskorken, Softwareanpassung von Alex Günther
Golf 3 Variant Modell 98, AFN mit 281000km, ASD Getriebe, VNT15 mit großer Dose, ansonsten alles Original / verkauft
Translated on 19-07-2026, 12:12.
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dieselschrauber Administrator


Joined: 04/12/2002 Posts: 18063 Karma: +797 / -0 Location: St.Gallen 2018 Volkswagen T6 
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18-07-2006, 15:14 Subject: Understanding Injection Start, TDI Timing Checker |
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Hi,
Unfortunately, the adaptation channel for initiating injection is only partially helpful.
Reason: There is a fixed shift of angle x°. Unfortunately, this has the disadvantage that under full load, you quickly reach an area that is unhealthy for the engine, while at the same time, significant potential is wasted at partial load/idle.
Best regards, Rainer.
Translated on 19-07-2026, 12:13.
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