One additional thing I wanted to compare between the units was the overall design for the X pipe/flow.

The FI exhaust has longer primary tubes that run through their X pipe:

http://img.photobucket.com/albums/v2...3/IMG_0983.jpg
http://img.photobucket.com/albums/v2...3/IMG_0984.jpg

I have not seen pics of the inner works of their X pipe, so this is was it looks like:

http://img.photobucket.com/albums/v2...3/IMG_0992.jpg
http://img.photobucket.com/albums/v2...3/IMG_1001.jpg

Kind of hard to see when looking down through the inlet pipes, but it appears to be a 3 to 4" oval cut opening where the 2 pipes merge.



The Motordyne unit takes a more direct/forced path and the point of merge is about 6-12 inches closer to the cats/test pipes:

http://www.motordyneusa.com/media/ku...20path%202.jpg

YXZpipe merge
http://img.photobucket.com/albums/v2...3/IMG_1020.jpg

Muffler divider
http://img.photobucket.com/albums/v2...3/IMG_1040.jpg

I don't know how each setup differs in performance, flow, or sound, but I though it was interesting to note.

what? how does ur car shoot flames ?

its not that uncommon. any straight piped exhaust and a little extra fuel will do this!

:iagree: When I had a 2step on my car it would shoot flames often.

Yeah, usually, the cat will burn anything left over, so running test pipes will allow the fuel through to flames under certain conditions.

so overall would you say the e370 is better? im planning on getting a cbe and cant decide between this and F.I.

By the report, it sounds like (pun intended) that MD is the better of the two. There is a lot to be said on how happy the sound makes you everytime you drive a car :)

Overall, the MD is a better choice for me. Sound was what I was looking for. Power, longevity, price, etc...I can't say which system is better for you :) Both are great!

Curious as to the whp you get with your setup, i.e. with E370, ART Pipes, MD intake manifold, drop ins & post MAFs.

:driving:

Dyno video


I lost a few HP after changing the exhaust, but I don't know how much is contributed by the changes in weather.

FI: (4th and 5th gear pulls)
http://img.photobucket.com/albums/v2...220_021515.jpg

E370 (blue pull) others were after a reflash
http://img.photobucket.com/albums/v2...325_131459.jpg
This dyno sheet does not have the temp readings, but when searching for weather conditions in that area on 3/25/12 it was about 72 degrees, 30.07in-Hg, and 76% humidity.

I only got in 1 pull with the Motordyne exhaust and no other changes; I was in a rush for time. The temperatures were a bit hotter on the E370 pull, but I provided Tony with the dyno files so he can compare them or do delta changes. After the pull I put another map on the car with the accessport and picked up a little bit of power. I still love the sound of this thing. :tup:

Sounds amazing boost, how much louder do you think the E370 exhaust is compared to an FI 12" resonated exhaust?

I'd say its probably closer to the non-resonated sound wise. A local member here has FI LTH's with a non-res FI CBE, and we might be at the same sound level (no proof).

I tell ya, ever since I added ART pipes to my TDXv2 (350z) I have never, literally never stop hearing compliments from totally random people who just get a small sample of the tone my exhaust gives off. This sounds pretty similar, and hope you enjoy it! Great write up by the way.

Here's a driving video of the Motordyne exhaust. Consists of a flyby followed by a spirited drive-by.
Ends with a few revs. (2K, 3K, 4K, 5.5K, redline)
Enjoy :driving:

Thanks for the video Boost it was awesome!! The exhaust note is wicked!!

Beautiful update! That's exactly what I was looking for. It sounds aggressive at wide open, but semi "tame" at regular throttle.

Sounded Great :tup:

Hey, great write up. I'm looking to buy an exhaust for my Z now and this definitely helps.
Just wondering...
Were both dynos with the 2 different exhausts just the CAT backs or did you have other mods too? Also, does this exhaust have HFC or TP or neither?

Both were with the same mods. ART pipes, M370 manifold, post MAF tubes, and drop in filters.

Great write up. I'm a new Z owner. This is my daily driver and I'm looking to just get a nice deep sound from the car at WOT and spirited driving, but don't want drone, hissing, and a loss of low end torque (which is how you win light to light). With no other mods to the car, would this be a good choice for an aftermarket setup? Not worried about gaining HP, as long as I don't lose it. I often drive with my daughter in the car with me on the weekends, so crazy loud is not an option. Your thoughts.

This system should provide what you're after, few can give the deep note without the hiss/drone.

If you're fitting to a catted system, the volume should be ok, if you're running TP's already, or want to run ART pipes, you might want to consider the HFC module for the shockwave system.

@ cold start this thing can be loud. There is little to no drone and no hissing, but the volume might be loud for you. As far as catbacks go, this isn't the quietest system. And I wouldn't worry about losing any power on this over a stock exhaust. I can't tell what you define as too loud though. Have you heard any other Z exhausts in person that you can compare to?

If you want a little less volume, you can add the HFC module to this system.

I'm sold. Just 1 quick Qs: any hint of rasp? I'll coupled it with ART pipes..

what you hear is what I hear :) no rasp for me on ART V1's

Now I'm really confused. I've seen cars making 300 whp with an intake, exhaust and ART pipes and yours is making 280 with all of that and the manifold? What am I missing?

You can't try to compare dyno numbers because all dynod are different. Maybe he used a mustang dyno? The dyno is a tool to tune not try to base numbers from different people. Maybe he lives somewhere hotter and more humid? And the manifold makes power midrange not top end so it wouldn't change the peak #

Numbers are numbers, not going to get into that war. Maybe it's my untuned cobb map. Maybe it was my lack of cai. Maybe my car is just a dud. :D

factory snail? :stirthepot:

wish this car came from the factory w/ a snail. mine will have a single soon.

wait, i see what you did there...

There's no war to get into. I'm not doubting anyone's dynos I'm just trying to understand as a new Z owner for when I do my setup.

Get a baseline and go from there. that way u will have an idea of whata to expect from your gains

No biggie. Just get a base line before you install if thats possible. My runs were like a month apart and 10-20 degree difference in temperature. After I go uprev, we'll see how the numbers change. Not too thrilled with my numbers, but I'm not going to place too much emphasis on them.

Excellent review! All the videos and different sounds kick major *** and will be extremely helpful...however now I am torn in what direction to go...

I am looking at this exhaust and the Exotic Speed Titan R II. Anyone have any recommendations on which route to go. Both sound killer and have great gains. My only draw back is how limited the info is on the Titan R II. Could really use some fellow Z owner peer pressure and second opinions (:

Very nice exhaust, any reason why it's priced almost $400 more than its competitors?

Especially since md isnt showing the gains that other exhausts are...

BUT... definately has the best sound of any system out IMO

no doubt, the look and fit are also quite nice.

agreed. I'm surprised there haven't been more dyno comparisons posted now.

SS firehawk lost hp with his md setup. it really bums me out cuz that exhaust just sounds BEASTLY

The comparative dyno in this thread is one first pull compared on a uncontrolled test basis so I wouldn't put much into it.

As for the difference in cost.

1) Its made in the Los Angeles, USA.
2) Its taken to a much higher level of polishing. Its not just quickly buffed. They go through 4 stages of finishing to achieve a deep polish.
3) Its taken to a much higher level of TIG welding.
4) It uses triple layered flex lines for flexibility without turbulence or whistling.
5) It uses V-band flanges and clamps.
6) It uses predominantly dual 3" Stainless Steel 304 tubing (for greater power capacity in the 8-15 PSI boost applications).
7) It is modular so it can have additional resonators or HFC's built into the mid pipes.
8) It can easily be converted to a full dual 3" exhaust for very high HP capacity.
9) It comes with 2 different pairs of adjustable/removable titanium and Stainless tips for different looks.

No other 370Z exhaust can do all this.

The above are real cost drivers for features not seen in any other exhaust.

The Shockwave))) E370 is the best exhaust available to the 370Z.


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