EDC16 Injection Durations(Passat 2007 1.9TDI 105

arwolc

Member
Joined
Aug 31, 2014
Location
Latvia
TDI
Audi 80 B4 1.9TDI
Hello. Could someone help me, please?
I want to remap VW Passat 2007 1.9TDI(105) with DPF a little bit. There is stock hardware and want stg1(remap to 60mg/str), but I cannot understand Duration maps - there are 43.85 degrees duration(60mg and 5000rpm) on stock map. Why so big diff with 2005 Passat 1.9TDI(non DPF)? There stock values for that map are 26-27 degrees and remaped are 28-29.
How much can remap max duration? I think 43 degrees are very much. There could be difference in nozzles?
 

Zak3

Veteran Member
Joined
Mar 19, 2009
Location
Morocco
TDI
98' Audi A3 8L (from AGR to ARL)
AFAIK There’s no need to modify duration for a stage 1.

Remember, more fuel needs more air.
 

arwolc

Member
Joined
Aug 31, 2014
Location
Latvia
TDI
Audi 80 B4 1.9TDI
Boost I set up to 1,3bar. Now I changed limiters to 60mg, but in real life there is no much power gain. I read that, that Duration max aproxx 35*, but why Bosch calibrated to 43* possible? And why other 1.9TDI passat with 105 engine are so big difference in duration?
 

QuickTD

Veteran Member
Joined
Feb 25, 2002
Location
SW Ontario
TDI
2003 Audi A4Q 5spd 2.0 TDI 2056VK R783, 2006 Audi A4Q 6spd 2.0 TDI
Injection nozzle size has a large influence on quantity vs duration. The DPF version is probably using long duration and small nozzles to trade soot for lower cylinder pressure/heat and reduced NOX.
 

duke21

Veteran Member
Joined
Jun 26, 2013
Location
Croatia
TDI
2.0 TDI BMN
Same difference in maps of 2.0 16v PPD tdi BKP (Passat 140hp nonDPF Siemens) and BMN(170hp DPF Siemens)

BMN durations around 35-40@4500rpm, BKP durations 26-28@4500rpm. So as QuickTD said its due to DPF.
 
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