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Audi R8 Ignition Coil Dwell Settings

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Hi, does anyone have Dwell settings for The Red Audi R8 coil packs (part Denso #673-9302)?

I don't know very much about these coils or Dwell settings in general. Are dwell settings something that should be supplied by the manufacturer? Or are they something that should be tuned?

Any help is greatly appreciated. Thanks

You can use oscilloscope to detection it.This technology include standalone courses.

The R8 coils do not need much dwell at all for most applications but they can be cranked up to produce really good ignition energy if needed. Be aware they pull significant current so your wiring needs to be capable.

For most NA and mild boost applications they only need about 1.6ms at 14V - they are pulling about 8A already at that! At 2.5ms they are pulling about 16A each. They saturate at about 12.8ms pulling 18A.

Here is the dwell table from the last time I used them in a mild turbo road engine ~1.4Bar.

Another table here:

"Cannot be run off the mill with ECU’s that cannot handle low input resistance"


How to know which ones are those Ecu's?

You will need an ecu with ignition drivers that can do 20mA at 5V minimum. Most of the common consumer level ecus can, many of the megasquirt variants can’t. If in doubt you will have to query your ecu manufacturer.


Do you have dwell settings for the U5015 Coils (NGK48042) used on TFSI and Lamborghini Gallardo ?

They should be similar to red R8 ones but i cant find good information about dwell vs bat voltage settings....