Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Engineering Analysis

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Oct 24, 2007 | 04:19 PM
  #1  
Hydrazine's Avatar
Thread Starter
|
Former G35driver Vendor
iTrader: (23)
Joined: Jul 2004
Posts: 3,054
Likes: 85
From: Los Angeles California
Post Engineering Analysis

Hi guys,

I wanted to get your take on the dyno plots I have posted on my website.

My background is engineering. I worked as a rocket scientist for Boeing and Marquardt for many years before starting up Motordyne. Hence the background.

Now that I am working as Motordyne I still use the same engineering standards for product design and data analysis. ...And a perfect example of the data analysis standards can be seen in the dyno plots on my website.

http://www.motordyneengineering.com/dynos.htm

My question is "Can most people understand what the heck all these different plots mean?"

For any engineer at Boeing, it would look like a great analysis, but what does it mean to the non "rocket scientist geek"? ...A normal person.

Is it pointlessly overboard? Does it make any sense at all?

I don't know of any other automotive part manufacturer that does dyno analysis like this. But at least for me, it really zero's in on exactly what the parts do.

This analysis took me a while to put together in Excel and has lots of good info, but does it work for you?





Or how about the A minus B plots below? I really like A-B plots.
It shows nothing but the actual change in power (compared to stock) at any specific RPM.
Note: This is not the usual way of showing dyno results but it is trecerously explicit.




Thank you for your feedback!
Tony
 

Last edited by Hydrazine; Nov 18, 2007 at 01:20 PM.
Reply
Old Oct 24, 2007 | 04:25 PM
  #2  
Gdup35sedan's Avatar
ENVautoDetailing.com
iTrader: (47)
Joined: Sep 2005
Posts: 9,257
Likes: 136
From: San Diego/Redondo Beach
Premier Member

All the lines are a bit confusing to the eye at first glance. But if you look closely, you can see where the MD products really shine over the rest

If people would take a minute or two to actually process and take in the information you're providing, they'll see the results very clearly!

Keep up the good work Tony!
-GP-
 
Reply
Old Oct 24, 2007 | 04:32 PM
  #3  
filanj's Avatar
Banned
iTrader: (20)
Joined: Feb 2004
Posts: 3,217
Likes: 1
From: In SoCal; from Jurze
Tony, which versions of the Kinetix and Crawford plenums did you test? The V, the V+ / V4.1 or V4.2?
 
Reply
Old Oct 24, 2007 | 04:33 PM
  #4  
Klubbheads's Avatar
Registered User
iTrader: (10)
Joined: Oct 2003
Posts: 17,039
Likes: 14
From: LA, North Holly
Makes perfect sense.
 
Reply
Old Oct 24, 2007 | 04:38 PM
  #5  
Hydrazine's Avatar
Thread Starter
|
Former G35driver Vendor
iTrader: (23)
Joined: Jul 2004
Posts: 3,054
Likes: 85
From: Los Angeles California
Originally Posted by filanj
Tony, which versions of the Kinetix and Crawford plenums did you test? The V, the V+ / V4.1 or V4.2?
It was the latest version of the Crawford plenum and second to last version of the Kinetix.

IMPORTANT EDIT: It wasn't my test. It was Sport Z Magazines test. (now Nissan Sport Magazine)


.
 

Last edited by Hydrazine; Oct 28, 2007 at 09:18 PM.
Reply
Old Oct 24, 2007 | 04:40 PM
  #6  
Jeff92se's Avatar
Red Card Crew
iTrader: (24)
Joined: May 2005
Posts: 37,810
Likes: 585
From: ɐʍ 'ǝlʇʇɐǝs
Premier Member

They look great Tony! Great colors and backgrounds too. I had to look at your dyno graphs a few times (on your site w/ multiple dynos for the spacers) but I got it after a few. I mean, if you take all that time to generate the graphs, the least we can do is take more than a glancing look at it.
One question. On your spacer dyno I assume C=Crawford and K=Kinetix. But can you clarify which versions? Thanks
 
Reply
Old Oct 24, 2007 | 04:41 PM
  #7  
jpez179's Avatar
Registered User
iTrader: (1)
Joined: Oct 2004
Posts: 261
Likes: 0
Are you hiring Mechanical Engineers?
 
Reply
Old Oct 24, 2007 | 04:48 PM
  #8  
Skaterbasist's Avatar
Retired SuperMod
Staff Alumni
iTrader: (16)
Joined: Feb 2006
Posts: 13,068
Likes: 101
From: Southern Cali --> 818
Makes good sense to me. In the first graph provided, would it be accurate if we, for instance, looked at the graph and concluded that that curve is the actual gains over stock at "x" RPM for any gear?

Thank you for your contribution to the VQ crowd Tony!

.
 
Reply
Old Oct 24, 2007 | 04:48 PM
  #9  
Hydrazine's Avatar
Thread Starter
|
Former G35driver Vendor
iTrader: (23)
Joined: Jul 2004
Posts: 3,054
Likes: 85
From: Los Angeles California
Originally Posted by Jeff92se
One question. On your spacer dyno I assume C=Crawford and K=Kinetix. But can you clarify which versions? Thanks
^That's exactly what it is.
 
Reply
Old Oct 24, 2007 | 04:50 PM
  #10  
Jeff92se's Avatar
Red Card Crew
iTrader: (24)
Joined: May 2005
Posts: 37,810
Likes: 585
From: ɐʍ 'ǝlʇʇɐǝs
Premier Member

Thanks. I just noticed. Who was spacer A? BTW Tony, the manner in which you research, post your results and reply to questions is one BIG reason everyone here has 100% confidence in any of your great products. I'm currently not a product owner but I always respected your products/company
 

Last edited by Jeff92se; Oct 24, 2007 at 04:52 PM.
Reply
Old Oct 24, 2007 | 04:54 PM
  #11  
Skaterbasist's Avatar
Retired SuperMod
Staff Alumni
iTrader: (16)
Joined: Feb 2006
Posts: 13,068
Likes: 101
From: Southern Cali --> 818
Originally Posted by Jeff92se
BTW Tony, the manner in which you research, post your results and reply to questions is one BIG reason everyone here has 100% confidence in any of your great products.
I can definately agree on that.

Originally Posted by Jeff92se
I'm currently not a product owner but I always respected your products/company
You are missing out

.
 
Reply
Old Oct 24, 2007 | 04:55 PM
  #12  
sharif@forged's Avatar
Former G35driver Vendor
iTrader: (5)
Joined: Feb 2006
Posts: 728
Likes: 3
From: Marietta, GA
Tony, you are not wearing your seatbelt in that dyno plot!

Honestly, very nice work, and extremly thorough.
 

Last edited by sharif@forged; Oct 24, 2007 at 05:25 PM.
Reply
Old Oct 24, 2007 | 04:57 PM
  #13  
Hydrazine's Avatar
Thread Starter
|
Former G35driver Vendor
iTrader: (23)
Joined: Jul 2004
Posts: 3,054
Likes: 85
From: Los Angeles California
Originally Posted by jpez179
Are you hiring Mechanical Engineers?
Not at this time. Thanks.
 
Reply
Old Oct 24, 2007 | 04:58 PM
  #14  
filanj's Avatar
Banned
iTrader: (20)
Joined: Feb 2004
Posts: 3,217
Likes: 1
From: In SoCal; from Jurze
Originally Posted by Hydrazine
It was the latest version of the Crawford plenum and second to last version of the Kinetix.
Okay. I've been interested in seeing the difference between the second to last version of the Kinetix and the latest version. I have run both versions in the past 6 months and did notice a difference between them. As most people know, Kinetix isn't honest with their dyno charts that they post on their site. Just looking at their charts (especially for the SSV) just makes me want to laugh (not trying to turn another thread into a SSV is bogus thread). They claim the same gains from the newest version as they did with the older version and I have to raise my flag for them on that. They do not state their products exact performance honestly as you do with your products.
 

Last edited by filanj; Oct 24, 2007 at 05:02 PM.
Reply
Old Oct 24, 2007 | 04:59 PM
  #15  
Hydrazine's Avatar
Thread Starter
|
Former G35driver Vendor
iTrader: (23)
Joined: Jul 2004
Posts: 3,054
Likes: 85
From: Los Angeles California
Originally Posted by sharif@forged
Tony, you are not wearing your setup in that dyno plot!

Honestly, very nice work, and extremly thorough.
Wearing my setup?...
 
Reply


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:38 AM.