Tony@NefMoto
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« on: September 03, 2009, 11:16:59 AM »
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Siemens Mototron DEKA IV 630cc Injector Specs
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em.Euro.R18
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« Reply #1 on: February 08, 2011, 03:56:07 PM »
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Siemens Mototron DEKA IV 630cc Injector Specs
Newbie question but how are we able to determine battery compensation values as well as constant from this information? My issue is the values given in the injector wizard are a bit off in my setup. I have poor idle and think I need to adjust those values. |
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Tony@NefMoto
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« Reply #2 on: February 08, 2011, 05:14:37 PM »
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Newbie question but how are we able to determine battery compensation values as well as constant from this information? My issue is the values given in the injector wizard are a bit off in my setup. I have poor idle and think I need to adjust those values.
You can't determine the voltage specific latency values from this. For that, I would recommend this website: http://injector-rehab.com/shop/lag.html |
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99pwr
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« Reply #3 on: February 09, 2011, 12:12:27 AM »
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I think the next theory can be applied:
From siemens 630cc specs, injector turn on time is 1,14ms and turn off time is 0,85ms. Latency=opening time - closing time= 1,14-0,85=0,29ms at 14V
To calculate the compensation for other values of battery voltage, you should apply the same amount of the difference between the original latency and new latency (0,29ms in this case) at 14V.Correct me if I'm wrong, please!
I do not understand yet:TEMIN and TEMINVA need to be changed? How? Also, KFSZDUB, KFTSRL and KFSZT is used to calibrate injectors or is part of dwell coils adjustment?
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nyet
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« Reply #5 on: February 09, 2011, 11:43:13 AM »
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Latency=opening time - closing time= 1,14-0,85=0,29ms at 14V
I'm a bit baffled, how is that latency? I'm pretty sure what you just calculated isn't latency... |
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99pwr
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« Reply #6 on: February 09, 2011, 01:44:27 PM »
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Latency=opening time - closing time= 1,14-0,85=0,29ms at 14V
I'm a bit baffled, how is that latency? I'm pretty sure what you just calculated isn't latency... I want to say injection time offset, TVUB, at 14 Volt |
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em.Euro.R18
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« Reply #7 on: February 18, 2011, 09:48:16 AM »
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For some reason my battery compensation values in the base file for the deka' 630's using Me7 are completly different than the values given from the link.
For instance my values on the base file: 7.8848v is 1.0935ms; 9.9968v is 0.7334ms; 11.9680v is 0.5174; 14.0096v is 0.4374ms; 15.9808v is 0.3920ms.
why is this?
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Tony@NefMoto
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« Reply #8 on: February 18, 2011, 01:23:15 PM »
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For some reason my battery compensation values in the base file for the deka' 630's using Me7 are completly different than the values given from the link.
why is this?
MAF and load could be underscaled, KRKTE injector scale could be different, injection time correction based on load could be different, etc... The battery compensation values are just the last step in the system for calculating injection time, so it is possible something in an earlier step has done something that is not stock. |
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julex
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« Reply #9 on: February 18, 2011, 03:11:59 PM »
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For some reason my battery compensation values in the base file for the deka' 630's using Me7 are completly different than the values given from the link.
For instance my values on the base file: 7.8848v is 1.0935ms; 9.9968v is 0.7334ms; 11.9680v is 0.5174; 14.0096v is 0.4374ms; 15.9808v is 0.3920ms.
why is this?
I see that this is taken from Tapp tunes b/c this is what he uses in his defintions. Regardless what lag you use you will always get misfires/rough idle since these injectors' spray pattern is inappripriate for 2.7engine. I had dekas, they sucked. Bought ev14s and by just changing injector constant to get proper block 032 readings, I got rid of all the misfires etc. This tell me the dekas just plain suck. |
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Tony@NefMoto
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« Reply #10 on: February 18, 2011, 03:19:50 PM »
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I had dekas, they sucked. Bought ev14s and by just changing injector constant to get proper block 032 readings, I got rid of all the misfires etc. This tell me the dekas just plain suck.
Dekas need to have the low load low RPM injection correction tuned to get them to idle well. |
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em.Euro.R18
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« Reply #11 on: February 21, 2011, 10:15:10 PM »
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I had dekas, they sucked. Bought ev14s and by just changing injector constant to get proper block 032 readings, I got rid of all the misfires etc. This tell me the dekas just plain suck.
Dekas need to have the low load low RPM injection correction tuned to get them to idle well. I thought that the first step was getting the battery compensation down then moving onto injector constant for overall fueling. Then finally injection correction. This is confusing the Hell out of me I've reduced my battery compensation by 15% from my base file and it seemed to help until I started over fueling like crazy at idle so I decreased the constant from .04975 to .04100 but I'm still overfueling. Does anyone know what I'm doing wrong? I'm mafless by the way. |
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MmmBoost
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« Reply #12 on: February 25, 2011, 07:21:40 PM »
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I see that this is taken from Tapp tunes b/c this is what he uses in his defintions. Regardless what lag you use you will always get misfires/rough idle since these injectors' spray pattern is inappripriate for 2.7engine. I had dekas, they sucked. Bought ev14s and by just changing injector constant to get proper block 032 readings, I got rid of all the misfires etc. This tell me the dekas just plain suck.
I had the same issues with my 630cc's. I ditched them for Genesis 550cc's and couldn't be happier. Everything just seems so much smoother. Idle is buttery, power delivery seems to be a lot more smooth as well |
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Tony@NefMoto
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« Reply #13 on: February 28, 2011, 03:44:19 PM »
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I thought that the first step was getting the battery compensation down then moving onto injector constant for overall fueling. Then finally injection correction. This is confusing the Hell out of me I've reduced my battery compensation by 15% from my base file and it seemed to help until I started over fueling like crazy at idle so I decreased the constant from .04975 to .04100 but I'm still overfueling. Does anyone know what I'm doing wrong?
I'm mafless by the way.
Main issue with the Deka 630ccs is they are very inconsistent at short injection times. So they are very hard to tune at idle, because they don't reliably inject the amount of fuel you ask for. If you increase the idle RPM and load, you can bring the injectors into a longer injection time where they consistently inject the right amount of fuel. |
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Rick
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« Reply #14 on: March 02, 2011, 02:47:21 PM »
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I don't know why anyone has trouble tuning idle, as the closed loop takes care of it for me no problem, i always idle at a constant lambda 1.
Rick
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