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This question may have been already ask, so please bare with me: Has anyone had either or both, autowerke software or the Powerchip, and if so which do you prefer? Has anyone added an AFE cold air intake kit and if so does it work for the american model?
 

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This question may have been already ask, so please bare with me: Has anyone had either or both, autowerke software or the Powerchip, and if so which do you prefer? Has anyone added an AFE cold air intake kit and if so does it work for the american model?
Do a quick search on the AFE and you will find out that this intake system actually loses power due to heat soak issues.

As for the software...I'm not experienced enough to comment.
 

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On my E39 M5 - I went with Powerchip. Very happy with it. Amazing difference compared to stock software.

On my E63 M6 - I decided to try Active Autowerke software. Extremely pleased with them too. Amazing transformation compared to stock.
The best mod for the beast in my opinion.

My recommendation though is to do your hardware mods first (Air scoops/cold air intake; exhaust, etc.)

Once you're done with your bolt on mods - then upgrade your software.
The reason being - they will fine tune your software according to the mods you have on.

Here is my review of Active Autowerke Software.

http://www.m5board.com/vbulletin/e6...-my-review-active-autowerke-ecu-software.html
 
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