Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

How does my stock dyno look?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 01-29-2008, 05:47 PM
  #1  
Registered
Thread Starter
iTrader: (1)
 
Vasichko's Avatar
 
Join Date: Apr 2006
Location: Plano, TX
Posts: 522
Likes: 0
Received 0 Likes on 0 Posts
How does my stock dyno look?

So I had this done back in August when it was about 98 degrees outside.

Sorry if its bad quality, I didnt have a scanner here and just found it while going through my file cabinent so snapped it with the digi cam.

I put down 174hp and 125tq.

Look ok to you guys?
Attached Thumbnails How does my stock dyno look?-dsc00015.jpg   How does my stock dyno look?-dsc00016.jpg  
Old 01-29-2008, 05:53 PM
  #2  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
It looks like a stock dyno ......

post it up in the Dyno sticky thread
Old 01-29-2008, 05:57 PM
  #3  
Rotary , eh?
iTrader: (1)
 
mac11's Avatar
 
Join Date: Jun 2006
Location: Elkhart, IN
Posts: 1,850
Likes: 0
Received 1 Like on 1 Post
the a/f doesn't look like a stock graph.

which gear was this pull done in?
Old 01-29-2008, 06:02 PM
  #4  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
Originally Posted by mac11
the a/f doesn't look like a stock graph.

?
looks like the sensor was not connected ....
Old 01-29-2008, 06:03 PM
  #5  
Rotary , eh?
iTrader: (1)
 
mac11's Avatar
 
Join Date: Jun 2006
Location: Elkhart, IN
Posts: 1,850
Likes: 0
Received 1 Like on 1 Post
wouldn't that lead to no reading?
Old 01-29-2008, 06:05 PM
  #6  
⎝⏠⏝⏠⎠
 
mysql101's Avatar
 
Join Date: Apr 2004
Location: USA
Posts: 8,625
Received 5 Likes on 4 Posts
you don't need afr to calculate hp/tq.

the graph looks like a standard rx8 NA dyno chart. Not high end, not low end. Just looks typical.
Old 01-29-2008, 06:13 PM
  #7  
Rotary , eh?
iTrader: (1)
 
mac11's Avatar
 
Join Date: Jun 2006
Location: Elkhart, IN
Posts: 1,850
Likes: 0
Received 1 Like on 1 Post
Originally Posted by mysql101
you don't need afr to calculate hp/tq.
I understand that. I was just noticing that ~15:1 afrs shouldn't be right and I can't remember the AFR's being that flat on a stock plot.

The power plot looks typical.
Old 01-29-2008, 06:16 PM
  #8  
⎝⏠⏝⏠⎠
 
mysql101's Avatar
 
Join Date: Apr 2004
Location: USA
Posts: 8,625
Received 5 Likes on 4 Posts
i'd say it's impossible for the stock pcm in this car to be that lean in open loop.
Old 01-29-2008, 07:16 PM
  #9  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Yeah, that AFR reading is not coming from the car.
That said, having the probe sitting in open air should have read at least 22:1.
Weird.

How sad is it that a perfectly normal, stock dyno plot for an RX-8 yields 174 HP and 125 tq?
Old 01-29-2008, 07:19 PM
  #10  
Registered User
iTrader: (2)
 
Optical TDI's Avatar
 
Join Date: Dec 2007
Location: Cleveland
Posts: 184
Likes: 0
Received 0 Likes on 0 Posts
Why does the power and torque dip at two points? One is at around 6300 RPMs.
Old 01-29-2008, 07:21 PM
  #11  
Out of NYC
iTrader: (1)
 
nycgps's Avatar
 
Join Date: Jun 2005
Location: Planet Earth
Posts: 19,881
Received 32 Likes on 30 Posts
Originally Posted by Optical TDI
Why does the power and torque dip at two points? One is at around 6300 RPMs.
becuz thats when some of the port opens.
Old 01-29-2008, 07:26 PM
  #12  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
First dip is the SSV opening. The second is the APV.
Kinda sad that a power adder takes away power first.
I'd call that crappy tuning, but there is really nothing you can do about it with just fuel and spark.
Since Mazda has a stepper motor on the APV, they should have it open gradually.

Last edited by MazdaManiac; 01-30-2008 at 12:44 AM.
Old 01-29-2008, 10:35 PM
  #13  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
Originally Posted by MazdaManiac
Kinda sad that a power added take away power first.
.
agreed - but according to THIS Mazda already considered that .
Old 01-29-2008, 10:43 PM
  #14  
Rotary , eh?
iTrader: (1)
 
mac11's Avatar
 
Join Date: Jun 2006
Location: Elkhart, IN
Posts: 1,850
Likes: 0
Received 1 Like on 1 Post
you're an ***!
Old 01-29-2008, 10:43 PM
  #15  
Nope
iTrader: (9)
 
chickenwafer's Avatar
 
Join Date: Jan 2007
Location: Denver
Posts: 3,312
Likes: 0
Received 0 Likes on 0 Posts
Damn!
Old 01-30-2008, 12:11 AM
  #16  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by Brettus
agreed - but according to THIS Mazda already considered that .

excellent timing on that.. good job!

beers
Old 01-30-2008, 12:44 AM
  #17  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
FAIL! I know you've been trying to get me back on that one Brett, but you will have to keep trying.
Old 01-30-2008, 12:52 AM
  #18  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
i'm sure you would have fallen for it if not for the comments after
Old 01-30-2008, 01:00 AM
  #19  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by Brettus
i'm sure you would have fallen for it if not for the comments after
I'm pretty careful about clicking on links to YouTube stuff.
You need to spoof the addy.
Old 01-30-2008, 01:38 AM
  #20  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by MazdaManiac
I'm pretty careful about clicking on links to YouTube stuff.
You need to spoof the addy.

x2,

i knew what it was by the u tube address. how sad is that..

beers
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hunterkelley24
Series I Engine Tuning Forum
14
06-14-2022 08:32 AM
fourwhls
RX-8's For Sale/Wanted
7
02-20-2019 05:16 PM
projectr13b
RX-8 Racing
20
05-14-2016 06:25 PM
Digitz0070
Series I Exterior Appearance and Body Kits
6
10-07-2015 12:43 PM
duworm
Series I Wheels, Tires, Brakes & Suspension
1
10-01-2015 04:57 PM



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

Quick Reply: How does my stock dyno look?



All times are GMT -5. The time now is 01:21 PM.