Raw Data: (right click, save as, all files dynonrun.001)
http://www.compaddict.com/RX-8/Dyno/DYNORUN.001
Raw Data from a stock 1994 RX-7: (right click, save as, all files stan.001)
http://www.compaddict.com/RX-8/Dyno/STAN.001
Run viewer software to see the data:
http://www.dynojet.com/downloads.shtml
7-30-2003
2004 RX-8
6 Speed w/sport
DSC & Traction Control Off
35PSI tires (Cold)
95 degrees F
22% Humidity
2215 miles
Third gear pull
100 Ft. Elevation

9-04-2003
2004 RX-8
6 Speed w/sport
DSC & Traction Control Off
35PSI tires (Cold)
85 degrees F
32% Humidity
4525 miles
Third gear pull
100 Ft. Elevation


Fourth and fifth gear runs were about one percent less (normal variances between runs).
I have over a hundred runs on this dyno with my other car and it seems about right with other Dynojets with comparable cars.

Vince

 

what is the spec sheet hp of your other car and what has it dyno'ed at on average in the 100 tests?

just looking at this graph i would say everything looks correct, except of course the peak HP. the 3 ports open at the correct rpm's and max power is at @8500 which is where it is supposed to be. it's just too low. i haven't commented in the dyno threads yet but i think now i am starting to agree with the fuel mapping people. otherwise i would have to say something is seriously wrong. i just don't get why this fuel mapping switch bit wouldn't be in the owners manual. was it in the "tech highlights" cd? i haven't burned and watched it yet.

 

It is me or The TQ graph > 6200 rpm seemed a little bit odd?

 

The other car is a CSP Miata and its output is coincides with other CSP Miatas with the same state of tune.
This Dynojet is as far as I can see the same as another Dynojet I ran the CSP Miata on one month before I switched dyno shops.

Vince

 

Nope, it coincides with the secondary port opening.

Vince

 

Wow, this doesn't look good. So far all of the dyno runs that I've seen are ~180HP at the wheels. That's 25 HP less than Mazda stated. I asked my dealer if he could find anything out, I doubt he will.

D-san

 

So what do you guys think? At which point can we expect the fuel maps to change and "release" the full power of the engine? Is anyone going to bring this up with their dealer/sales rep/regional rep?

Vince, have you done any 1/4 mile runs yet?

 

Well, I paid for 205rwhp or 247 at the crank, and that's what I want! I haven't opened it up yet, but I may be disappointed when I do. Mazda needs to start talking right now before I start getting irate. Don't get me wrong, I love the car, I just want everything that I paid for.

Any of our Japanese friends put one on a dyno?

D-san

 

About all I can think, is this BLOWS! I'm sure after these recent dyno's, this car is going to be the laughing stock of all the forums.

 

It is clear to me that the car for whatever reason isn't making the power it is supposed to after about 6K.

Those ECU maps need to kick in.

-Mr. Wigggles

 

I think the whole changing fuel maps thing is total speculation and at this point in time no one but Mazda knows why the HP is down so much.

I don't do 1/4 mile stuff but I autocross and my RX-8 seems fast enough!

Vince

 

Well if that run that was done with the G-tech is any indication, lower gear power is not a problem since he did pull of a mid 6 sec 0-60.. but the power up high seems to be lacking thus the mid 15's 1/4 mile time. I think everyone expects this car to dyno somewhere in the 200-210 whp area. Assuming for a min that the dyno numbers are off for whatever reason, DSC, etc, but if the car only does mid 15 in the 1/4 then that supports the 180whp numbers. The mystery continues...

 

I think it's unrealistic to think a switchover in the ECU mapping will suddenly find that 20 - 25 horsepower. And even if it does, having to wait until 20K miles would be seriously frustrating.

 

Especially since the car magazine mules were pulling off mid 14's with 2-5K miles on the odo..

 

Actually, the secondary opens around 4000rpm, that one is the auxilliary/ tertiary port.

Is there a way to see a Torque curve from this data?

 

You are right of course!

To look at the data download the runviewer software and then open the files and select "Torque" by right clicking on where it says "SAE Horsepower" and if you want "RPM" instead of "Speed" do the same right mouse click trick on it.

Vince

 

Let's try this too:





You can click on the image for a larger more easily read version.

 

Kawi: Do you have the full version of WinPep? Or am I missing something? Or both!

Vince

 

Nope. I just downloaded the executable that you posted from above.

The scales on the left and right sides of the window have options you can right click on and change.

 

So what do the two dips at 6.4K and 7.4K represent? They're rather large and the torque is definitely decreasing after the 6.4K dip. Did you "feel" those dips in power while on the dyno?