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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Sneak Peak at injector coding via INPA



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      04-15-2012, 02:15 AM   #199
m1bjr
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Q:

If you fit a NEW injector on one cylinder and DO NOT code it, I presume it will run okay(ish) - anyone actually tried?
I mean, if quite a few dealers seem to have done this in the past by accident/ignorance, then I presume its not such a big deal?
The reason I ask is I can do the spanner work, and run it to a dealer the next day or so so for another person to fix the software.
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      04-15-2012, 05:14 PM   #200
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Just adding some more data values for general reference. Here is what I found:

injector values in computer:

injector 1: 57.7, 2.16
injector 2: 59.3, 2.31
injector 3: 58.1, 2.10
injector 4: 58.4, 2.08
injector 5: 58.4, 2.12
injector 6: 57.7, 2.23

actual values on injectors:

injector 1: 57.7, 2.18
injector 2: 59.3, 2.33
injector 3: 58.1, 2.11
injector 4: 58.4, 2.09
injector 5: 58.4, 2.13
injector 6: 57.7, 2.24

Not being the original owner of the car, I wasn't sure if any injectors had been replaced and the computer not updated. Looks like everything is in check.
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      04-15-2012, 07:46 PM   #201
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Quote:
Originally Posted by scottro View Post
Just adding some more data values for general reference. Here is what I found:

injector values in computer:

injector 1: 57.7, 2.16
injector 2: 59.3, 2.31
injector 3: 58.1, 2.10
injector 4: 58.4, 2.08
injector 5: 58.4, 2.12
injector 6: 57.7, 2.23

actual values on injectors:

injector 1: 57.7, 2.18
injector 2: 59.3, 2.33
injector 3: 58.1, 2.11
injector 4: 58.4, 2.09
injector 5: 58.4, 2.13
injector 6: 57.7, 2.24

Not being the original owner of the car, I wasn't sure if any injectors had been replaced and the computer not updated. Looks like everything is in check.
Well that's good to know but also seems to kill the theory of bad injector coding leading to timing drops.

How much boost are you running these days?
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      04-15-2012, 10:48 PM   #202
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Quote:
Originally Posted by Ilma View Post
Well that's good to know but also seems to kill the theory of bad injector coding leading to timing drops.

How much boost are you running these days?
About 14psi and my timing looks great. Starts the gear at about 8.5deg and ends around 11-12deg with no timing drops. Any more boost and I run into timing flatlining issues.
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      04-16-2012, 12:04 AM   #203
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just ordered my cable to test this out.
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      04-16-2012, 02:08 AM   #204
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Quote:
Originally Posted by scottro
Quote:
Originally Posted by Ilma View Post
Well that's good to know but also seems to kill the theory of bad injector coding leading to timing drops.

How much boost are you running these days?
About 14psi and my timing looks great. Starts the gear at about 8.5deg and ends around 11-12deg with no timing drops. Any more boost and I run into timing flatlining issues.
Don't injectors 'age' the settings?
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      04-16-2012, 07:17 AM   #205
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umm what happened to vas, looks like he's banned
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      04-16-2012, 08:05 AM   #206
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umm what happened to vas, looks like he's banned
yeah why did he get banned people? his info is always top notch and very thourough/helpfull
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      04-16-2012, 09:09 AM   #207
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Quote:
Originally Posted by crypticc View Post
Don't injectors 'age' the settings?
I don't really have any insignt into the BMW computer to know for sure, but it sounds reasonable. That is why I did not attempt to change the values to match 100%. 0.01 is close enough for me.
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      04-16-2012, 03:25 PM   #208
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umm what happened to vas, looks like he's banned
Quote:
Originally Posted by 335(EX)(EYE) View Post
yeah why did he get banned people? his info is always top notch and very thourough/helpfull
Be carefull, people already started questioning that on this very thread and had their posts deleted for bitching about the mods on this site.

I feel like I'm living in Russia
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      04-16-2012, 04:38 PM   #209
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Quote:
Originally Posted by scottro View Post
Just adding some more data values for general reference. Here is what I found:

injector values in computer:

injector 1: 57.7, 2.16
injector 2: 59.3, 2.31
injector 3: 58.1, 2.10
injector 4: 58.4, 2.08
injector 5: 58.4, 2.12
injector 6: 57.7, 2.23

actual values on injectors:

injector 1: 57.7, 2.18
injector 2: 59.3, 2.33
injector 3: 58.1, 2.11
injector 4: 58.4, 2.09
injector 5: 58.4, 2.13
injector 6: 57.7, 2.24

Not being the original owner of the car, I wasn't sure if any injectors had been replaced and the computer not updated. Looks like everything is in check.
those look ok. when i tried to change mine to be exactly like the actual values, it sets it back to the original computer value. unless i'm mistaken, they are adapted/rounded value.
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      04-16-2012, 04:50 PM   #210
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Quote:
Originally Posted by prelude2perfect View Post
Be carefull, people already starting questioning that on this very thread and had their posts deleted for bitching about the mods on this site.

I feel like I'm living in Russia
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      04-16-2012, 06:07 PM   #211
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Quote:
Originally Posted by prelude2perfect View Post
Be carefull, people already starting questioning that on this very thread and had their posts deleted for bitching about the mods on this site.

I feel like I'm living in Russia
Just do what the Russians do.......drink enough vodka to make the problem disappear before you do
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      04-16-2012, 10:22 PM   #212
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Just do what the Russians do.......drink enough vodka to make the problem disappear before you do
lol
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      04-16-2012, 10:25 PM   #213
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Vase is banned... but i don't think he's "gone"...
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      04-17-2012, 12:42 AM   #214
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Try having your stealership forget to install all 6 decoupling elements. Yeah that happened to me.
happened to me too....
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