MOTORDYNE ART Pipes - Review

Footloose301

I gave up last month and went with an FI.

After mine is turbo then I might consider them again if there's a 3" version.

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2010 40th Anniversary 370Z

G37sHKS

Bump

Motordyne

2 systems are complete. Its the 3rd one that is being difficult.

b1adesofcha0s

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Project: b1adeZmobile (2009 370Z) | Uprev Tune by AAM Competition | Berk Exhaust
Project: b1adeZmobile 2.0 (2014 C7 Z51) | Corsa Xtreme Exhaust

sfearl1

Had a Shockwave V2 system on my 350... by far the best sounding exhaust system I've heard on a Z car. I can't wait to get one for my 370... Tony builds QUALITY stuff!!

370Z JT

I'm happy to report after 300 miles, my SES codes p2a00 and p2a03 has not returned after taking out the steel wool as suggested by Tony. Hope it remains that way!!

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370Z JT

Tony. Is it safe to say the exhausts will not be ready for purchase by Jan 1?

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NeverBoneStck

Don't count on it ..

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Juiced! That is all you need to know !!

tommyguns

I'm so on the fence regarding the ART pipes. Can I please get some updates as far as CEL's, rattles, leaks and any other concerns that I should be aware of, also what has been done to resolve these issues if there could be a resolution. A big plus would be to hear from anyone that has them with my same exhaust system, sound and performance wise.
Thanks in advance,
TommyGuns

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09 Sport / MB / 6sd / Nismo"R" Intake / Eibach Pro Kit / Z1 25 row cooler / JWT LW FW / New Short Block 3/11/11 /H&R 15fr 20rr/DBA 4000/FI CB with 12"res./Morel/JL/"Division"mod/SPC/EcuTek/M370/ZEX C SHOT/ART's/NRG

Motordyne

CEL fixed. The steel wool was overkill.
The graphite gasket was replaced with high temp gasket maker so it doesn't oxidize.
The rattle was fixed with the addition of the bracket.

As for sound it depends on what exhaust system it is connected to but in every case regardless of what it is connected to, the ART pipes are much quieter than regular resonated test pipes.

Footloose301

I just finished my third "fix". Now I removed the gaskets entirely and used only RTV so we'll see how that goes. I haven't yet removed the steel wool because my car was tuned with the steel wool so I'm confident my CEL is coming from the leak only.

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2010 40th Anniversary 370Z

AlphaSnacks

Regarding the wool:

I was forced to do some custom fabrication to my ART Pipes, because they did not come with a bracket. Unfortunately, simply welding a bracket would not suffice, because the J-bung for the O2 sensor hung too low, thus it would not allow the OEM brace that holds the OEM cats to be used. So the bung was cut, angled upward, and rewelded on. I had noticed that the hole that feeds air to the J-bung was so, so sooooo tiny - roughly the size of an ant in width, which explains why ART Pipes can trigger CELs. Seriously, you'd be hard pressed to stick a grain of rice through it. That coupled with the enormous amount of wool stuffed into the bung made it clear why I started getting CELs.

Btw: Performance Motorsport did an absolutely astonishing job with the welding and fabbing. They TIG welded practically everything for me, and all of the cuts, bends, and etc. look damn near factory finish. The vibration in my shifter is now completely gone, and even though I still have a bit of an exhaust leak in the flex area of my exhaust, because there is more rigidity the exhaust leak isn't opening much so the leak has gotten a bit quieter and less annoying. Still, I'm awaiting on my new flex sections - someone from Invidia sent me a pair from a G37 sedan stupidly (they're completely different in size, length, and even design). I was so pissed when we realized it at the shop. And 370Z replacements won't be available for another 2 weeks.

370Z JT

I was trying to trouble shoot my SES for 5 months. Finally tried removing the wool. So far so good.

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Motordyne

Great news on the exhaust.
After fabricating prototype, after prototype, after prototype and testing every single one of them on the street and the dyno I finally came up with a configuration that is a superior design than the 350Z TDX2 system.

There were many new concepts tested. Some were wildly different using side helmholtz sidebranch resonators exclusively. Most of which didn't pass the sound quality test.... but with enough experimentation I began to see the patterns of what the 370 liked and didn't like.

What I did find is that much of what I already figured out in prior development testing still held true but just required a little modification.

The different merge collectors at different merge angles and merge distances from the engine. All re-mapped and dyno tested on the 370. ...The results were the same as what I found before.

Total merging of the exhaust gases merged at the proper angle and merged close to the engine (but not too close). So once again, the XYZ pipe is a critical element to optimum power and sound. What is different now is the XYZ module line up has 2 new options.

1) Straight pipe module
2) Resonator module
3) HFC module
and now
4) A new muffler module
5) A new muffler module with a built in HFC.

The new 370Z exhaust configuration is slightly quieter than its predecessor the TDX2 for normal everyday daily driving but it really lights up at high RPM WOT. And its not just loud, its sounds excellent when loud. So I would sum this one up as having a more progressive sound than the TDX2. Quieter at low RPM yet louder at high RPM.

I like this one.

I am going to do one more set of tweaks to the muffler to do a little more experimentation on the sound but either way, it will either be the one I have on the car now or a slightly quieter muffler.

This has been an exceptionally long, costly and challenging development project but it came through. All prototype experimentation will be concluded Tuesday.

Armonster

When you put together a press release could you please expand on these a bit? It seems like you can mix and match, so it would be nice to know the pros/cons of each combination.