I was going to keep a record of my dyno runs and what settings I used, and figured it may be useful to others. So I will keep a running log of my dynos at

http://www.derek.com/350z/dyno/

Next step will be to alter the timing with the ignition harness. I don't expect that to change the dyno results much though.

After that comes the fuel system...

-D

 

Derk, I assume you made these runs without your eManage getting an RPM signall...right? Becuase your fuel gets very lean past 5500rpm, which is exactly what mine did at 5psi without the RPM signal.

With the RPM signal and 5psi, you should be very rich across the board....11.5:1 at the leanest.

Good numbers though. Looks like th test pip is adding about 10-15 HP at the top vs. my RT cats. Can you post your TORQ numbers as well?

 

Those are with the RPM adapter functioning correctly (if it wasn't, the car would have blown up)

I don't know why it's running so lean, that is part of the reason I'm going to post a history detailing changes made between runs. The fuel curve looked better when I added a little boost over stock

I can't do torque right now because I'm running the Dyno Run Viewer in a virtual Windows machine on a Mac, and for some reason it throws a floating point exception when it tries to calculate torque (I'm guessing the x86 arch isn't 100% emulated). However, someone running Windows should be able to d/l the data file and view torque.

I will be experimenting with the fuel system in a few weeks, so it should be interesting to see what the differences are.

-D

 

You have a very lean running ECU then. Becuase your car is running much leaner that most with the base eManage map. Is RPM displaying accurately in your Profec? I had all the same issues which is why I am asking. Your AF looks like mine when I ran the dyno with the RPM adaptor not functioning properly. That should be a good indicator of how rich this kit normally runs. And thank you...my car didnt blow up...LOL But readline AF went from 11.5 with the adaptor, to like 13.5 without...almost 14.1....opps..and this was only at 5psi....

Also check your stock eManage fuel values. Are you enriching about 35% towards redline at 5.0V's ?? Based on that map, I would be adding some fuel beyond 5500 across all the MAF voltages...just my opinion...strive for sub 12:1

 

Didn't yours run 14 on your Dyno reading, from the tailpipe sensor ? But read lower with your AEM ?

I belive these could be off
Like to see what you read Derek with your A/F sensor

 

My RPM reading is correct (double checked that after disconnecting the RPM line from the turbo timer)

Along with the fuel system, this is my next project. I need to learn more about changing these maps. I see 2 options:

1. Raise the entire map the same percentage, and watch real-time to make sure the cursor doesn't "walk" into a zero value field
or
2. Plug in the laptop and record runs, then go to each individual cell and adjust accordingly

#2 is obviously the better way, but we're talking crazy amounts of dyno and tuning time.

I am in an ongoing email discussion with Zeitronix. The analog output voltage of the ZT2 is not linear. They provide a series of data points, but no function. I am going to wait and see what Zeitronix's response is before posting detailed comments on this.

-D

 

Looking good man, but why are you dynoing in 3rd and 4th gear? You should be dynoing in 5th where the ratio is 1:1.

 

My tuner usually does 3rd gear runs with 6 cylinder cars and 4th gear with 8's. I am inexperienced with dynos so this is over my head. I will be back on the dyno in a couple weeks so I can do 5th gear pulls then. We did the one 4th gear run because I wanted to see if there was any difference in A/F.

-D

 

Yes, that is what I thought at first. But then I discoverd the RPM wire was not functioning becuase I hooked up a turbo timer to it as well. So my eManage wasnt getting a signal and wasnt enriching fuel.

When on the dyno, my AEM consistenly read richer than indicated on the dyno. But my point is that the shape of the curve looks very similar to mine when I ran without the RPM signal.

THe absolute numbers may be different between AEM and the dyno's wideband, but the shape of the curve should be identical....right?

 

Yup..most people here run 5th gear pulls...just keeps things good for comparison purposes. Also note, there is very little difference between 4th and 5th gear pulls. But lets all agree to use 5th gear pulls.

 

5th gear really ?
I run at 3rd and a few at 4th...

gg, did you ever get your a/f set up through your e-01 ?

I have the External Signal Harness for the e-01, and was wondering if I just need the Bosch LSU4 Wide band O2 sensor, to get it hooked up...

 

I am wiring the AEM to the Profec on Friday. I am having Street Image do the work, since...remember...I still need to move my gauge from the dashboard to the guage pod. And this requires unclipping and re running the wires all the way to the cat.

It is my understand that the Profec will work with any O2 sensor that has a standard voltage output wire....usually a white wire. But what you will need is the conversion table for that particular sensor in order for the A/F ratio to display correctly on the Profec. The table should be included in the instruction manual for the sensor.....the AEM Wideband guage included this.


ACP.....So you are running your dynos with 3rd gear? This could explain why you had less torque than met at 3000rpm. Seems like the gearing doesnt make much difference in terms of peak HP and TRQ, but does anyone know if it makes in different in the "Area under the curve". I am getting about 305trq at 3000rpm in 5th gear!