NefMoto > Technical > Tuning > linearization of siemens 390cc injectors
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Author Topic: linearization of siemens 390cc injectors  (Read 5092 times)
naach_
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« on: January 30, 2018, 03:47:19 AM »
hello again guys, again fighting with my a4 b5 AEB with ecu me7.5 032hj. again I went to set it up with new injectrores siemens 390cc volvo. but I can not find his perfect krkte and I do not find any specifications to adjust TVUB, TEMIN and TEMINVA, which makes the car very strange, very poor, suddenly very rich, the slowdown is unstable on the verge of stopping according to wideband due to poverty. my krkte right now is 0.085 since an FPR of 4bar is running. Maybe I'm leaving some map behind?

this is my TVUB map

   7            9           11          14         15 v

1,7413    1,1387    0,8080    0,5973    0,4427

inj ref. siemens deka 9179379


I'm honestly a little bewildered, thanks in advance guys
« Last Edit: January 30, 2018, 03:56:16 AM by naach_ » Logged
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naach_
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« Reply #1 on: February 05, 2018, 02:19:14 AM »
nobody has information about these injectors? I am seeing myself with a lot of inactivity problems when it reaches idle it stays a few seconds afr 10 and then starts to regulate in a weird way
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TijnCU
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« Reply #2 on: February 05, 2018, 05:06:50 AM »
Maybe these injectors spraypattern is not suitable for your engine. You can try to find latency data for the injectors, must be available somewhere. But if you have that one set it should just run fine, these injectors are not that large to cause trouble with minimum pulsewidth..
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_nameless
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« Reply #3 on: February 05, 2018, 06:02:12 AM »
Quote from: naach_ on February 05, 2018, 02:19:14 AM
nobody has information about these injectors? I am seeing myself with a lot of inactivity problems when it reaches idle it stays a few seconds afr 10 and then starts to regulate in a weird way
ive done these injectors before in the past with no data. took a few edits. spend time with tvub between the 12-14v mark. when the car is running thats what the voltage is when the cars running  so most time needs to be spent tuning that. without proper info its a trial and error until you get close. heres a screen shot of the values i ended up with.
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« Reply #4 on: February 05, 2018, 06:11:43 AM »
heres the actual tvub values from the car that uses those injectors
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naach_
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« Reply #5 on: February 05, 2018, 04:24:01 PM »
Quote from: Marty on February 05, 2018, 06:02:12 AM
ive done these injectors before in the past with no data. took a few edits. spend time with tvub between the 12-14v mark. when the car is running thats what the voltage is when the cars running  so most time needs to be spent tuning that. without proper info its a trial and error until you get close. heres a screen shot of the values i ended up with.

and regarding TEMIN and TEMINVA? What would be your adjustment?
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« Reply #6 on: February 05, 2018, 04:27:48 PM »
None. These maps dont beed to be touched (in my opinion) for injectors this size. 1000cc + yes i can see needing to make changes but not this small
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naach_
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« Reply #7 on: February 19, 2018, 11:49:30 PM »
Quote from: Marty on February 05, 2018, 04:27:48 PM
None. These maps dont beed to be touched (in my opinion) for injectors this size. 1000cc + yes i can see needing to make changes but not this small

thanks marty, with this configuration the car works quite well, at 90 degrees is regulating lambda in measurement channel 1 and third box between -1 and + 3%, and in channel 32 first box is subtracting a 3.4%, much better than with Any other mod that I have tried, thank you very much. Do you think it can still be tuned better? for now I will test the car as well as it transmits very good feelings by accelerating in vacuum, if someone has this same problem with these injectors, this krkte and tvub that marty shared is great, thanks again marty
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