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      04-27-2013, 02:19 AM   #10
Mpro
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Belgium
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Drives: AW 1M & other BMW's
Join Date: Oct 2011
Location: East-Flanders - Belgium

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Don't be afraid to get in trouble with the authorities if you switch to N55 mids.
This is an OEM part, I doubt there's 1 technician at the inspection who knows the difference between N54 and N55 mids.
By the way: You can always put the N54 mids back on if necessary.

I've heard both in combination with Akra Slip on and there is a difference in sound.
The removal of the secondary cats also gives you a few extra ponies.

Where are you exactly from in Belgium?
I have Akra slip on (with wirereless) + N55 mids.
We can always meet so you can hear it in real life and compare with your sound.
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