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Doughnut delete, modified stock pipe, and hose, clamp, ready to install

3340 Views 10 Replies 4 Participants Last post by  raamaudio

NEW PRICE, $39 Shipped OBO, going soon as I have an offer:)

For $39 shipped, which will cost around $10 to ship them, you get the $22 hose, $2 SS hose clamp, the pipe out of the turbo so you can leave yours stock if needed later on...and the time to go get parts, fuel to get the parts, time to do the work, all you have is a few minutes time to invest and done

If delete your own and later need to have a stock one it will cost you a great deal more;)


Fast and simple way to delete your doughnut. First mod on my car but no miles as the car is on the lift for major mods and I just built a 2" all tubing one to replace this as going to a larger turbo as soon as available, this is all you need for a stock turbo.

Get this and keep your stock doughnut intact if you ever need it for any reason.

See the picture and link here, the hose looks much better in person, nice and black, I cleaned it up a bit, it is a high grade hose that cost $22.

$49 shipped in cont US, OBO, OBO, OBO:)

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Still available, surprised it has not sold actually and the price is OBO....keep your stock pipe if ever needed, install this.....easy and low cost way to clean up the flow.....:)
Updated, new lower price, $39 shipped OBO
It may contain some oil but that might be indicative of a problem with your turbo oil seal as no oil should be found there very, very little if any at all. There is no separator, it would allow any oil vapor to simply pass right by and only trap what is leaking out of the turbo when you shut it down, etc.....It is not an oil trap, it if was it would be listed as a maintenance item and have a way to clean it out.
I was thinking back to prior boosted cars, NA ones I boosted, boosted ones I added more boost to......a little oil is normal....a lot is not.
If we can figure out a way to capture that oil before it goes into the intake manifold....................even better before the IC.............
I am not an audio engineer.

But, I have spent over 50 years playing around with acoustical issues in various ways, I built some horn loaded speakers when I was around 12 years old, built most all my home audio speakers since then. I have studied car audio acoustics, been an audio judge, competitor, beaten a world champion, been published, owned a sound deadening company for 15 years, have demoed a system for the owners of the oldest HiFi shop in the US(HiFi was here before stereo) and they were amazed at what can be done in a vehicle. I spent 20 years in electronics in the USN, was in charge of rebuilding the second largest control center and worked out all the acoustical issues, decided upon and ordered all products and oversaw installation. I have designed and built labyrinths to trap acoustical energy for various reasons....again not an engineer but have worked with many including the prior head acoustical engineer at NASA, I have his horn loaded speakers in my living room, I have a bit of an idea of how acoustics work but always more to learn, of course:)

The device on the car may pick up oil but it is not an oil trap by design, that is a side effect, could be intentional, makes sense it would, if just an oil trap it would be quite different in structure. It is absolutely a trap for a specific frequency range which most likely is the turbo whine but could be for the noise some love to here between shifts or both, I would have to say it seems more for the turbo whine like the chamber on the tube that feeds the manifold on my Duramax.

I am glad it picks up oil and I am going to dig into this a bit and see what can be done to replace it with the 2" piping I built, there may be a product for this I can simple weld in, etc.....

Most sincerely,
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