I put on my Invidia exhaust a couple of weeks ago.

I also put in my active silencers I bought off ebay. They're advertised as "automatic silencers". They're knockoffs of the Apexi Active Tail Silencer. But the Apexi version is way overpriced and they don't offer a 4" version for the N1 anyway. The knockoffs were $40 each including shipping.

I have to say I am pretty impressed. At "normal" throttle openings the exhaust is fairly quiet, but when I open it up it sounds off.

For comparison I tried it with no silencers and all I can say is holy crap. Definately too loud.

Then I tried the Invidia silencers. Still pretty loud with alot of drone. I expected them to be quieter...

Then back to the active silencers and the sound is just right. Quieter then the Invidia silencers until you step on it. And very little drone.

I did feel that the springs in the active silencers were a bit too stiff, so I cut off 1/2 coil on each one. Which isn't easy cause they're welded together and the spring is up inside so it took some creative work with the dremel to reach in there.

The car feels as strong with the active silencers as it does with no silencers, so the "active" part must be working.

There was a rattle because the silencers are slightly undersize for the N1 mufflers, so I wrapped the silencer in a piece of sheet aluminum so that the silencer fits snug. No more rattle.

I can't say I'm in love with the looks of the active silencers, but they're not bad.

Overall I'm quite pleased with the result.

Outside the car. http://www.youtube.com/watch?v=wfbM8IV13gc

Normal driving. http://www.youtube.com/watch?v=me7NZsLfNxE

Normal aggressive driving. http://www.youtube.com/watch?v=yDvPPSJCTHA

9k shifts. http://www.youtube.com/watch?v=SrMqeVaN324
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