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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 12-21-2016, 09:31 PM   #1
cwarel
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Latency (dead times for injectors )

Alright guys I really need some help with this 6900371 Siemens deka 440CC injectors
I put them in my car for turbo project and I edited the maps
So car runs fine for a moment and then it misfires a lot I increased and decreased amount of fuel that aint it so i think its down to Latency or injector dead times I looked all over internet and couldnt find anything about these injectors
If anybody knows something pls let me know
Meanwhile Ill keep trying random latency numbers in hope that I hit a jackpot
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Old 12-21-2016, 10:36 PM   #2
cwarel
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Alright I got it to work , I set latency for 12 volts to 1.05 and 14 volts to 0,95 that did the trick but still has to be adjusted ( has to go something like 0,95 for 12 volts and 0.85 for 14 )
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Old 12-21-2016, 11:29 PM   #3
genius328i
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Sounds like your on a great right track bro wish I could help out.

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Old 02-25-2018, 04:08 PM   #4
riback99
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Quote:
Originally Posted by cwarel View Post
Alright I got it to work , I set latency for 12 volts to 1.05 and 14 volts to 0,95 that did the trick but still has to be adjusted ( has to go something like 0,95 for 12 volts and 0.85 for 14 )
I'm also installing 6900371 Siemens 440cc injectors for my supercharger setup. Any updates on working dead time values?
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Old 03-08-2018, 04:48 PM   #5
Das_e30
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Looks like five-o motorsports sell them, maybe try to contact them? AFAIK dead times are not a point and shoot type of setting.


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Old 12-11-2018, 01:02 PM   #6
Johnny88
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Any experience on the 6900371 Siemens injectors? I'm mostly worried about the spray angle.
The OEM M54B30 injector bungs are angled, with a 25 degree spray angle to point the fuel directly at the back of the intake valves.
When you put an aftermarket injector into the M54B30 intake manifold, it sprays fuel at the port floor, not at the back of the intake valves. This makes tuning part throttle tip-in, and even idle very difficult.
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