MOTORDYNE ART Pipes - Review

AlphaSnacks

Here's the link. WTF is this?

Video - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting

I literally drove the car 25 miles to my girlfriend's, no noise. From there drove another 10 miles home, when I rolled down the windows as I was getting off the highway I heard the noise (it was DEFINITELY) not there before.

Motordyne

Can you get under the car to see what side it is on or what it may be?

AlphaSnacks

I can try. But with the drop, it makes it much more difficult now.

Although it does sound more like driver's side.

Armonster

Here is what mine sounds like. Anyone else getting this?

daisuke149

well its def not the ART pipes that make the hiss on their own. was talking with kevin today, he just replaced his Gemini with the CNT racing exhaust and said he noticed the hiss and his gemini never had it. Hes had HFC for a while now.

So the ART pipes/test pipes probably make it noticeable due to the increased flow but its something that needs to be fixed in the exhaust. Hopefully the motordyne exhaust will do that.

aadosx

If you came from stock cats you won't notice a huge low end TQ improvement.. but you will notice the top end improvement. If you come from test pipes, it will be the opposite: you'll notice a huge low end TQ improvement but not any top end improvement.

The only way to have an exhaust with absolutely no rasp or hiss, from every Z I've ever seen personally, is to use stock cats. It's as simple as that. Sadly, there are trade-offs when it comes to modding.. that's just how it is. For all the power you're gaining you have to give up a little something. The hissing on these things is EXTREMELY minimal compared to test pipes.

This is probably a loose ceramic coating bead that got into your ART Pipe when they were making it. Tony already mentioned this earlier in the thread. Did you not read it? ...

I would try to figure out exactly where the noise is coming from first, then go from there. If it's something inside the ART Pipe, I'm pretty sure Tony will take care of you. GL.

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Armonster

Thanks for those thoughts. I have to point out, though, that people have already indicated that different exhausts produce varying amounts of hiss with these ART pipes. So while it may never disappear completely, it sounds like there are some setups that are better at eliminating hiss than others.

I am hoping to hear some other cars with ART pipes and aftermarket CBEs. I'm interested to see what Motordyne comes up with on the exhaust front, but whatever it is will probably be too loud for my tastes anyway.

aadosx

This is pretty much it man. The more free flowing the exhaust (true dual being the most, OEM with y-pipe being the least), the less hiss you'll have.. but then obviously the more noise your exhaust will produce (louder). Sucks doesn't it.

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2007 350Z HR :: 3.7 Final Drive : Injen Long-Tube Intakes : TurboXS Cat-Back : Eibach Sportline : Enkei RPF1 18x9.5/10.5 +15

AlphaSnacks

Tony said the new production shouldn't have this issue. Though I've already contacted him and he's ready to provide a replacement immediately if I say so. First I want to eliminate the possibility of it being anything else before I waste his time and before I have him send me a replacement I may not need.

Did you listen to the video? It sounds way too metallic to be a loose particle, if you ask me. It also goes away at above the 3K mark.

Motordyne

It shouldn't but if there are any of the ceramic beads, we will use a polishing method... that doesn't involve ceramic beads.

In any event that would be covered under warranty.

AlphaSnacks

Here is a much better video of the sound. Notice as the idle drops, the sound goes away at the very end.

Video - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting

da mayor

sounds like something is stuck inside the pipes. -- maybe the gaskets?

obviously your dead bolt came out- yours is less than a year old... i wish mine was that easy but it wasn't

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NeverBoneStck

Thats exactly what mine sounds like ....

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kosstick

Ditto. Mine sounds exactly like that. Any idea if its both pipes or just one?

AlphaSnacks

Couldn't confirm it 100% - the sound traveled way too much. It sounded like driver's side more than anything. I replaced both yesterday, so far it's fine. I'm keeping my fingers crossed and hoping it doesn't happen again.