Audi R8 or 2011 MY Cayenne coil packs compatibility with first gen Cay

[danish]

This might be a dumb question, but I noticed that Audi R8 Coil Packs (06E905115EKT, made by Bremi?) are compatible with a lot of VW/Audi models.  Considering I know nothing about coil packs besides the fact that they generate enough volts to make the plugs spark, and considering the number of things common between Touareg/Q7 and Cayenne, does anyone know if R8 coil packs or 2011+ MY Cayenne coil packs are compatible with Cayenne MY 2003-2008?

They look very similar in terms of physical aspects, but don't know if they generate the same voltage and have same resistance (Ohms, or is resistance boot based?) and or if circuit board inside them will make OBD throw up a code due to misfire.

Any other recommendations, Bremi, Bosch?

[Loren]

I would stick with the Porsche OEM coil packs. Porsche is on the 3rd or 4th generation of them and I would not risk misfires and pre-detonation with the wrong part.

[danish]

Thank you Loren.  By OEM, do you mean Beru?  Or Genuine Porsche?  I assume Beru coils have been revised as well if they are identical.

[Loren]

When I say OEM I mean meets or exceeds Porsche specs. So the right Beru should work. You can always get a great discount at Sunset Porsche in Oregon - be sure and tell that RennTech.org sent you.

[danish]

Thank you Loren.