^ i dont blame ya my friend. You feel the difference?

Straight away, even after initial ECU reset.

Very nice.

Sounds alright!

I still don't think I'm going to go catless but this is for sure a nice piece.

In essence, these are test pipes with built in o2 sensor defoulers? Am I missing something else?

MSRP?

^^^ Yup...they're test pipes that have side branch resonators. Heres a link to his site.

Intake/Exhaust Components - MotorDyne Engineering

Much better then a standard test pipe IMHO

Holy crap.. $500?

What is better about these than a normal set of test pipes, aside from the fact that they have the o2 sensor out of the stream.

All info in this thread.
Little rasp in comparison to standard test pipes, better sound, more low down and mid range TRQ + more HP through out RPM range - Dyno will confirm but I am pretty in touch with my vehicles and this feels dam good.
Do some research, lots of info avaliable. Again , all comments are MHO.

In my experience directly, standard TP's, good value, rasp at 2800, loss of TRQ where you need it. HFC's nice sound, good power, not so bad in low down TRQ, personally I like my TRQ low down and in the mid range, it suits my driving style, I also like the most usable power under the peak for my buck. These fit the bill perfectly for me and did what I was hoping for.

I did my research and it paid off.

Horses for courses, everyone picks there own poison etc.

I read the thread... I just don't see why they cost $500.

Maybe I'm being too harsh, but it doesn't seem like they would be worth that much money. Just from looking at those pictures, it looks like they were put together with a MIG welder and then sanded to get that shiny finish. You can see the splatter in the welds...

I really appreciate the reply, but what makes you think that these make more power than other test pipes? From the description on their site it seems the main selling point is that they are louder than stock, but not as loud as test pipes...

I have run normal test pipes many times, and HFC's, to me it feels much better.
The loss of rasp is a great benefit , but more so for me is the TRQ gain instead of loss.
My total exhuast set up from headers back will be <the typical CBE cost.

Like I said it counts where I want it, I like to trial parts and be different, this was a good test.

When I get the dyno I will be able to over lay my stock dyno pull against, normal TP's, and TP's with a full CBE.
Until then its my butt dyno talking, but my butt dyno is quite calibrated ;-)

Not trying to push guys one way or the other, to me it was a sound deal and matched my over all plan.

if you had a chance to follow Keastley's history you'd see that hes gone through just about every test pipe and/or HFC. So hes experienced / seen them all to know how they sound, feel and look up close.

Plus the benifit of these are the side branch helmholtz resonators which are more than just sound baffles, they serve a function with the air flow as well. Someone posted a proper text book description i think a page or two back.

well considering there is no other test pipe on the market like this one, no other pipe or HFC that provides the gains as this one, not to mention the R&D that went into creating this ART pipe...there is a disgustingly long thread on my 350z about these pipes with dyno scattered...give it glance if you want...plus import tuner did an article with dyno...

Dyno Friday afternoon dudes...

Yea, I've been reading a lot about people saying it does this and that, just don't see any real dyno proof as to how much of it translates into power and/or trq.

I'll be looking out for the graphs soon!

^^ did you bother to do any research?

I don't think that he did, lol

Hey, just reading around the forum... it was a question I had. I believe the response was similar in the thread where someone had posted the Motordyne intake manifold. Everyone was quick to say it was the greatest thing, yet dyno graphs show it losing power up top. Now, I won't say that power low and mid isn't a good thing, but certainly for the money it would be nice to have something that gained power everywhere... right?

I'm not bashing anything, I would just like to see the actual results. I don't want to get caught up in the illusion that because these are so different, they are the greatest thing out there. Until I can see the dyno graph of it acutally making more power, than the standard test pipe everything else is moot.

Everyone's butt dyno is different. :-P

OP, do you have dyno graphs of the TPs you had before? Are you going to have something to compare these ART pipes to?

O yeah, I will compare to ...
Baseline - Stock vehicle
TP with X pipe CBE and tune
TP with Y

Should be decent enough data

^ what Y pipes have you ran before K? I was looking into the JIC magic y

I agree my friend, but those people who showed us lost power in high end thats because of the tune, They already had a tune before they switch the manifold and thats why there were a lose in power.. A retune or tune the car after the manifold installed you will see no lose;)

on the 2nd hand. My friend, these ART test pipes are legit gains because they were made for 350Z HR(they are not new) and they made good amout of power over HFC and normal Test pipes.

search in 350z forum for ART test pipe thread made from Motordyne. you will see links of reviews from customers at the first page.. you will be sold trust me..

GZ3 - I ran an OBX, Topspeed and currently an Ebay unit that set me back, what for it 99.99 to the door, funny enough its the best fitting one yet.


Just for thread info - this is purely a 'bolt on' comparo/review, I will not be tuning the vehicle in any way to maximise gains, on one of my previous dynos the vehicle was optimised so dyno this time should really push the ART pipe to match or better a more modified vehicle.

I enjoy all this stuff, looking forward to see what the M370 mani will do when bolted up with these and compared non tune and
with tune.

Will have to purchase another AP to do that or just get me an UPREV license and hardware.

Rest assured all data will be up Friday evening with video of dyno.

That is comparing apples to oranges.

I don't care what is made on an HR 350Z. I don't have an HR 350Z, I have a 370Z. That is like saying headers on an LT1 engine make good power, so they will deff make good power on the LS1. Not always the case.

If there are updated graphs for that manifold that show no power loss through the band, please link me. I would love to see it. Seems kinda silly to me as to why it wasn't posted originally.

OP, that really sounds great. I look forward to seeing all of this come together! :tup:

Glad you liked the ART pipes, Motordyne makes some high quality stuff!

I see the point your making, trust me i do, but the arguement here is science VS logic,...the helmholtz resonance is already a scientifically proven phenomenon. Tony from motordyne used to be (still is) a rocket scientist, now a car guy with his own company.

:shakes head: you know what man, believe or not, its ur call.. i was just trying to help you

im done.

Hey dudes, lets wait for the data, keep it on track, appreciate everyones input thus far.

Sooo....my art pipe order got cancelled due to a stock error!!!!!!! :icon14: ..........................:confused: .............:crying:

Oh no, when are they due?

Mariella from motordyne called me and apologized, only prob is they might be up to 8 weeks out for the next batch :( noooooo!!!! they were due by this weekend....I was also gonna do a full review considering all i have is drop ins, my baseline was 285rwhp...uhhh....now...what to buy in the meantime!>>!?

buy the Texans a win. they cant do it on their own! ;p

bwahahhahaha i wish i could, but am already broke trying to save the cowboys' season :shakes head:

:tup:

I installed mine today as well, fits like a glove....just took it for a small drive, there is a marginal difference as per butt dyno, will post a review soon

any dyno review besides butt dyno? :p

I haz dyno... video , results posting soon. All good ;-)

how soon?????

Uploading......................prolly next hour or so.

nice..!

OK - Cold Data time.

I dropped in the stock filters prior to trip today as previous runs had been with stock airbox config.
The only mods at time of pull were, MD ART TP's, Y pipe, stock ECU, i.e. no tune.

http://i116.photobucket.com/albums/o...IMG_7464-1.jpg

Getting strapped down.

http://i116.photobucket.com/albums/o...IMG_7465-1.jpg


Ready to rock

http://i116.photobucket.com/albums/o...IMG_7466-1.jpg

One of the pulls.

http://i116.photobucket.com/albums/o...h_MVI_7469.jpg

Data (seems my butt is a calibrated tool ;-))

Light Blue = My Vehicle Stock
Dark Blue = My vehicle - TP's Full CBE , tune for AFR and timing.
Red = Today, ART pipes, Y pipe, Stock ECU.

http://i116.photobucket.com/albums/o...Z/IMG_7477.jpg

Conclusion - Yep they work, best bang for buck thus far, with an AFR tweak I feel I could pick up another 5 or so mid range and up top, its running a little lean but not pulling timing, just feel it would benefit from a tweak.
Impressed at the entire curve, even when compared against my Z in its most aggressive fromat the current mods perform better and a fraction of the cost, my budget mod project has proven a good one, if you compare the stock vehicle to the vehicle as she sat on the dyno today the $$ to Performance ratio is very appealing.

Low end.
http://i116.photobucket.com/albums/o...Z/IMG_7474.jpg

Mid Range
http://i116.photobucket.com/albums/o...Z/IMG_7475.jpg
http://i116.photobucket.com/albums/o...Z/IMG_7476.jpg

Top end
http://i116.photobucket.com/albums/o...Z/IMG_7473.jpg

Plans
Replace stock filters - Done
Replace post MAF tubes
Install CBE
Test MD intake mani
Tune

Hope this was helpful guys, any ?'s on anything PM away.

Cheers and Happy New Year to all.