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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old November 11th, 2019, 12:14   #1
Join Date: Aug 2014
Location: Latvia
Default EDC16 Injection Durations(Passat 2007 1.9TDI 105

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?
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Old November 11th, 2019, 13:06   #2
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Join Date: Mar 2009
Location: Morocco

AFAIK There’s no need to modify duration for a stage 1.

Remember, more fuel needs more air.
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Old November 11th, 2019, 13:11   #3
Join Date: Aug 2014
Location: Latvia

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?
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Old November 11th, 2019, 15:15   #4
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Join Date: Feb 2002
Location: SW Ontario

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.
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Old November 21st, 2019, 07:11   #5
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Join Date: Jun 2013
Location: Croatia
TDI(s): 2.0 TDI BMN
Fuel Economy: 7.0L/100km

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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