Motordyne ART Pipes. Can Helmholtz Resonance Be Utilized to Make More Power? Having taken a break from busting fuel treatments to find that the G-Tech is surprisingly accurate (April, '10), and settle the lightweight flywheels/torque debate (May, '10), you can imagine how sadistically happy we were when we caught wind of these products from Motordyne: ART (Advanced Resonance Tuning) test pipes and resonated Shockwave V2 exhaust, designed to increase power over traditional aftermarket alternatives by using chambers that trigger Helmholtz resonance to aide in exhaust gas scavenging for increased power. Shyeah . . . and that rich Nigerian prince who keeps emailing us about cashing his inheritance check is totally legit. Now, Helmholtz resonance is a scientifically proven phenomenon. The property can be demonstrated with a glass bottle: As air is blown across the top of the bottle, some enters it, is momentarily compressed, and then surges outward at a slightly faster rate than it went in, creating a vacuum that draws more air back into the bottle to continue the process. Proof of this oscillation of air can be heard in the tone or frequency emitted by doing so. In the case of the products at hand, exhaust gasses are blown across built-in resonance chambers, and the frequency of pressure waves created therein pushes exhaust gas through the tubing and out into the atmosphere. Now, if Motordyne has one thing working toward their credit, it's that they're by no means an upstart company. Remember the plenum spacers that have become mainstays in 350Z tuning for their simple, low-buck design and solid power gains? Turns out Motordyne owner Tony Colette was a rocket scientist in his previous profession (no, seriously-he was), and he invented those. "Not only will the resonance chambers increase scavenging and power," Tony promises about his new products, "but the titanium tips on the Shockwave exhaust also reduce pressure drop by gradually expanding the exhaust gas to recover its dynamic pressure," which, he claims, also helps increase scavenging. Exhaust tips for power? We were really looking forward to the dyno. To test Motordyne's claims with its ART products, we gathered Ken Kojima's '06 Nissan 350Z, equipped with a reputable "Brand X" test-pipe and exhaust, to the Dynojet rollers of Yimisport Tuning in Santa Clarita, CA, where it was baselined, then tested with Motordyne's ART pipes and resonated ShockWave V2 exhaust in place of its original aftermarket vendible. With Motordyne's ART test-pipes and resonated Shockwave V2 exhaust installed, gains as high as 9.4 whp and 17 lb-ft of torque were found throughout the '04 350Z's powerband-impressive, considering we were already testing against proven aftermarket upgrades, but Tony wasn't happy. Ken's car had been fitted with a cone filter/short-tube intake that, he suspected, was wreaking havoc on the car's MAF sensor, triggering the unusually rich air/fuel ratios throughout the duration of testing. Tony promised his products were good for even more power, and arranged an '07 Nissan 350Z (Rev-Up) as a second test car to prove it. With its factory flat-panel air filter and box installed on the '07 350Z, testing re-commenced. Replacing the car's stock cat-back exhaust with Motordyne's Shockwave V2 produced as much as 22.7 whp and 17.9 lb-ft of torque at points in the powerband, and where the "Brand X" test-pipes produced as much as 23.3 whp and 31.8 lb-ft of torque over the stock cats at some points, Motordyne's ART test-pipes increased their output by an additional 11.2 whp and 29.7 lb-ft of torque at varying rpm. Air/fuel ratios stayed in their normal range this time, and power gains-as promised-were more plentiful. The Verdict: Fact Tested on two different cars, with two (slightly) different engines, compared to two different aftermarket manufacturers' conventional products, the gains by which Motordyne's resonance-chamber-equipped products increased power were definite. Now, you might be wondering what would happen if a different exhaust is used with the ART test-pipes, or if the Shockwave V exhaust would make power with the stock cats. Would the difference in airflow throw off the whole system and negate power gains?' "Think of blowing across that bottle," explains Tony. "If you blow harder, with more air, the frequency doesn't change but the volume or amplitude does. It's the same here. More air means even more resonance and more scavenging." Still, what happened in our first test? "350Zs have a problem with certain short-tube intakes," explains Tony. "Depending on their design, we think they direct air toward the car's MAF sensor a certain way that triggers an improper injection of fuel, which decreases power." He continues, "It's a well-documented problem, but as far as I know, no one's ever gotten to the bottom of it." Sounds like we have a topic for next month. www.superstreetonline.com/how-to/engine/impp-1006-nissan-350z-motordyne-fact-or-fiction/

Wow! You can read the brochure.

NotAmuZed .....brochure of facts. That was published by superstreet magazine, not Motordyne.

Motordyne G35 Yea I was just making a joke and am gonna be picking up motordyne test pipes and cat back myself

Juan Esteban Any TEST pipes will do. They'll all make 8-12whp..You'll just delete the restrictive cats with pipe. Forgot the expensive shit, a pipe is a pipe go with eBay.

Litteraly

I mean if you make good money it shouldnt be a issue lol

he is basically saying "put this exact exhaust on its the only one that doesn't drone." bro i spent 340 bucks on a muffler, and the cost for a shop to weld my muffler on, and take the resonator out, and i have zero drone. you dont have to spend a lot on a full exhaust. you just need to know what to put on or take off to get the sound you desire with no drone.

@@flyhigh8113 If you make good money you're not buying a G35. Get the fuck over yourself.

Sensibly. Some people still think they are $10,000 cars.

WYOGarage with super low miles they can be but not 200k like some people think their worth 5k still

@@zachdowney8454 Respectable. Im not quite sure if Im getting robbed in my upcoming purchase, but the sedans hold a special place in my heart for some reason and found a clean one for 3700, 6 speed with 150K on the clock.

​@@BountyHunterLetsPlaysOnGoogle there's literally 4 for sale around me that are manual and they want $7500+ and they have over 160k miles. Fucking ridiculous. Autos go for super cheap though.

@@rubbertoe. I found a manual with 71k for $8000 Is that a bad deal?

I got one too! Has 100k on it though, but it only cost me 3k. Its beautiful.

I can say the same thing December 16,2020 I buy my first car a G35x. I love it already!

sucks its an x though

Nd carti

Thank you. No I have not thought of either yet. Maybe a Quaife differential. The VLSD is working fine still.

Jeoka Gem .....I did the install myself and I know, the JDM trim piece is still on my list. After some new Work wheels and OG duck bill trunk, then the JDM trim piece. No offense taken, thanks for the feedback.

Black the only color im buying any g in. Next car will be an 06-07 g35 or 2011-2013 g37

NUDVL ......Boost is number 1. I am not there yet. I said in the notes, Top 7 NA MODs. I will be getting boost one day.

kparlett's g35.......I just youtubed that and holy shit is that channel awesome! I just clicked subscribed. Let me research what you are talking about on the BC's. KW's v3 are designed for 75-90% street use, but a guy did a complete review on superstreet on how it cut down is lap time by 2 secs, just from changing to KW. For a car that is 99% used for the track, KW's spring rates will be too soft.

Yeah that's my predicament lol. My Z is set for the track, but I might want similar track settings just because ...but then I know for the daily comfort feel, I'll want KW. KParlett also has the IG I follow. That's where I asked about his coilover set up

I agree, but it did not make my top 7 mods. My other mods cost much, much more and I do have the MD 5/16th spacer. Dyno tuned +37whp/45wtq........kzfaq.info/get/bejne/f7l2gq6aprW4nas.html Performance Mods: - KW v3 Coilovers - Injen CAI - NWP 75mm throttle body - Motordyne MREV2 - Motordyne 5/16th spacer - Motordyne v3 ART pipes - Motordyne Shockwave TDX2 exhaust. Tuned Numbers: 283whp/270wtq

I missed the bottom half of your paragraph, sorry. You are correct. On the rev-up a 5/16th spacer does nothing unless paired with MREV2, which is a modified lower non-rev plenum by Motordyne. The first 2 runners choke out cylinder 1 and 3, so they are shaved down. For a non rev, the 5/16th spacer makes a big difference. On the rev-up motor, which I have, you need both, MREV2 and 5/16th for it to work.

Hahah no!

good

gmbboys203 ....UPREV is the tuning software, no chip. Here is a video where I go into more detail at the dyno......kzfaq.info/get/bejne/f7l2gq6aprW4nas.html

No it is not. I also have a revup and the 5/16th spacer does nothing unless paired with the MREV2. I have the 5/16th spacer with the MREV2. With all my mods on the dyno I gained 37whp/45wtq. Video on my channel. MREV2 is how you get all the wtq gains. On revups, the lower plenum has shorter runners for high rpm. The MREV2 is nothing more than a lower plenum from a non-rev DE with the front to runners shaved down because cylinder 1 and 2 choke at higher rpm.

You don’t haha, either gotta switch back to oem for smog or gotta know someone to pass you

Erick Quezada ....headers are a known waste of money unless long tube headers, but ART pipes have been proven to make same power as PPE long tube headers. So ART pipes with Motordyne Shockwave is the best combo. No need for long tube headers which will also bring rasp and drone into the exhaust system. I looked at Stillen shorty headers a long time ago and after talking with my tuner, I decided not to do it.

Motordyne G35 awesome! Thank you very much for your reply. I’m actually using my tax return to buy my parts. And I was still debating on the headers. But yeah I kind of was more on the NO side. So I think you helped me make my mind. I’ll use my money for another part. Maybe the MREV2 intake manifold. Thank you again! 👍🏼