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Author Topic: Logged coil pack voltage with VCDS. This seems very off to me...Log inside  (Read 6698 times)
f1torrents
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Hey guys. I decided to do a log of before and after my new coil pack install.
The original coils are in the car now, I'm not sure of the revision. BKR7E @ .032

I have a new set of GTI 2.0t coils 06H 905 115 B and a new set of BKR7E @ .040

IN.HG is rock solid at 22
Boosts to the requested 17PSI no problem

I have a pretty rough idle and recently at WOT under high boost I get some stumble and hesitation.
I figure the plugs and coils are due to be replaced anyway so its a good place to start trouble shooting.

The log is as follows
In neutral
 
-Idle for a few seconds
-1000 RPM for a few seconds
-2000RPM for a few seconds
-3000 RPM for a few seconds.

It seems 2 packs are shot but which 2? The ones with the lower voltage or the higher?
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f1torrents
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Sorry
Its a 2004 Audi A4 1.8T
Stage 1 tune
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IamwhoIam
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block 026 shows knock sensor normed voltage, not coil pack voltages, sorry to disappoint you.
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I have no logs because I have a boost gauge (makes things easier)
f1torrents
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 Shocked
Well Damm
So what does the varying of voltages mean?
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catbed
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Shocked
Well Damm
So what does the varying of voltages mean?


How noisy the engine is. You can't really do anything with knock sensor voltages. The ECU takes the voltage and compares it to the average.
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f1torrents
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The engine purrs like a kitten

It has a vibration at idle ~800RPM
If I slightly press the gas and raise it to 1000RPM its smooth as butter.
While driving its also super smooth, no issue except at idle.

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phila_dot
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Try blocks 14-18
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catbed
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The engine purrs like a kitten

It has a vibration at idle ~800RPM
If I slightly press the gas and raise it to 1000RPM its smooth as butter.
While driving its also super smooth, no issue except at idle.



I haven't come across a 4cyl that doesn't do that.
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vdubnation
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not sure if this will help

 i have my bkr7e's gapped to .28 and haven't had any issues i m boosting 21 out f21's
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