Cobb Datalogs
09-25-2010, 10:19 AM
#126
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Yes, TP 2-8%, fuel cutoff. BNR with EBC off at 6.5 PSI.
I'm still waiting for you to fix my Baseline file.
No problem...
Anyway if I shift the AFR I'm getting ridiculous AFR's of 15-17s at WOT in 8XXX RPM. I don't fill it in the car. So I don't shift.
Here is the WOT portion of the log, no AFR shifting.
I'm still waiting for you to fix my Baseline file.
No problem...Anyway if I shift the AFR I'm getting ridiculous AFR's of 15-17s at WOT in 8XXX RPM. I don't fill it in the car. So I don't shift.
Here is the WOT portion of the log, no AFR shifting.
If you look at where your afr rises, you just let go of your pedal.
:-)
09-25-2010, 10:41 AM
#127
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I finally made some good runs this week using Baseline and my "Open Loop" map....
At the end of the day, I did not have to touch my MAF much... just a few minor tweaks.... I was getting the AFR's I expected in my fuel maps.
I changed the upper MAF voltages by a M value of around 0.96 on average as it was running a bit rich in the higher RPM's / loads.
I attached a snapshot of my log. It shows a highway cruise at WOT mid RPM range... I sorted by calculated load, highest to lowest.
I am getting my low 13's as I mapped out in my fuel table.
Other areas I am getting pretty consistant mid to upper 14's as expected.
Going to use this MAF curve now and tweak the fuel tables for any spikes in AFR or low spots. :-)
At the end of the day, I did not have to touch my MAF much... just a few minor tweaks.... I was getting the AFR's I expected in my fuel maps.
I changed the upper MAF voltages by a M value of around 0.96 on average as it was running a bit rich in the higher RPM's / loads.
I attached a snapshot of my log. It shows a highway cruise at WOT mid RPM range... I sorted by calculated load, highest to lowest.
I am getting my low 13's as I mapped out in my fuel table.
Other areas I am getting pretty consistant mid to upper 14's as expected.
Going to use this MAF curve now and tweak the fuel tables for any spikes in AFR or low spots. :-)
Last edited by chonniedotcom; 04-27-2013 at 12:10 AM.
09-27-2010, 01:51 PM
#129
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Ya think I am running a bit lean? What would you run at? 12.8 ?
I don't hear ping... at least I don't think so... Would it sound like is does in a normal engine?
With my mid pip I have it makes it hard to hear anything when I punch it.
09-27-2010, 10:55 PM
#131
Uh, are you guys talking FI or NA? 'Cuz, those numbers be wrong either way.
For FI on the Renesis, NEVER go above 11.5:1 at the torque peak at full load. In fact, the power difference between 11.5:1 and 10.9:1 is negligible.
For NA on the Renesis, shoot for 13.2:1 at the torque peak for maximum power. The difference between there and 12.5:1 can be as much as 12%, but it depends on fuel quality, ignition timing and engine health.
For FI on the Renesis, NEVER go above 11.5:1 at the torque peak at full load. In fact, the power difference between 11.5:1 and 10.9:1 is negligible.
For NA on the Renesis, shoot for 13.2:1 at the torque peak for maximum power. The difference between there and 12.5:1 can be as much as 12%, but it depends on fuel quality, ignition timing and engine health.
09-28-2010, 12:11 AM
#132
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Uh, are you guys talking FI or NA? 'Cuz, those numbers be wrong either way.
For FI on the Renesis, NEVER go above 11.5:1 at the torque peak at full load. In fact, the power difference between 11.5:1 and 10.9:1 is negligible.
For NA on the Renesis, shoot for 13.2:1 at the torque peak for maximum power. The difference between there and 12.5:1 can be as much as 12%, but it depends on fuel quality, ignition timing and engine health.
For FI on the Renesis, NEVER go above 11.5:1 at the torque peak at full load. In fact, the power difference between 11.5:1 and 10.9:1 is negligible.
For NA on the Renesis, shoot for 13.2:1 at the torque peak for maximum power. The difference between there and 12.5:1 can be as much as 12%, but it depends on fuel quality, ignition timing and engine health.
I have not messed with the timing...
Engine seems to be in great "health" ... Starts quick always...Cold and Hot... and runs very smooth.... 60,000 km.
I am shooting for the 13.2 at max torque....
From my logs... I look like I am getting very close to 13.2... need to tweak a little...
:-)
Last edited by chonniedotcom; 09-28-2010 at 12:15 AM.
09-28-2010, 09:25 AM
#134
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Thanks Maniac...
I will readjust the higher load and RPM areas to around 12.8.
I don't want to blow up my motor!!!
Thanks to everyone for the great advice!!!!
:-)
10-03-2010, 08:52 PM
#135
Extraordinary Engineering
Thread Starter
Okay, now I've replaced the bad ssv actuator I now have a new datalog to post (#11).
Jeff, you can see in the logs how much my high RPM AFR changed from Dyno day (#1)!
If you are not pulling close to 210 g/s you should probably check for vacuum leaks on the SSV actuator
The size of the leak: Setup: a hand vacuum pump connected by hose to the actuator : Pull vacuum and wait : My actuator would bleed down to half vacuum in about 5 seconds.
On my car it meant that the SSV was closing as it ran out of vacuum! This is why my car pulled so low on the dyno.
It seems like a small difference in air flow but it's pointing to a bigger problem. And there is no CEL and no other way to tell.
Obviously it needs to be tuned now that it's fixed.
Jeff, you can see in the logs how much my high RPM AFR changed from Dyno day (#1)!
If you are not pulling close to 210 g/s you should probably check for vacuum leaks on the SSV actuator
The size of the leak: Setup: a hand vacuum pump connected by hose to the actuator : Pull vacuum and wait : My actuator would bleed down to half vacuum in about 5 seconds.
On my car it meant that the SSV was closing as it ran out of vacuum! This is why my car pulled so low on the dyno.
It seems like a small difference in air flow but it's pointing to a bigger problem. And there is no CEL and no other way to tell.
Obviously it needs to be tuned now that it's fixed.
Last edited by DarkBrew; 10-05-2010 at 03:28 PM.
10-04-2010, 01:10 PM
#138
Extraordinary Engineering
Thread Starter
10-04-2010, 01:29 PM
#139
10-04-2010, 01:46 PM
#140
Extraordinary Engineering
Thread Starter
Mazda sells them as a set (SSV and actuator) for something like $250
I bought a used actuator for $50 shipped. There are several out there but you have to make sure that they are tested with a vacuum gauge for leak down before you buy.
Quick question...
For my next set of logs am I starting with what I have from the GTA dyno day or am I going back to base maps?
I bought a used actuator for $50 shipped. There are several out there but you have to make sure that they are tested with a vacuum gauge for leak down before you buy.
Quick question...
For my next set of logs am I starting with what I have from the GTA dyno day or am I going back to base maps?
Last edited by DarkBrew; 10-04-2010 at 01:58 PM.
10-05-2010, 02:49 PM
#142
Extraordinary Engineering
Thread Starter
Should I revert to the base calibration? Since this is a big AFR change should I consider the cal from GTA dyno day to be trashed?
Seems like a lot of money for something that isn't broken...
Seems like a lot of money for something that isn't broken...
Last edited by DarkBrew; 10-05-2010 at 02:53 PM.
10-05-2010, 03:00 PM
#144
Extraordinary Engineering
Thread Starter
Something new to check... Add it to your list
There are lots of cars only pulling 197 - 200 G/s WOT
I wonder how wide spread this is...
There is no warning that this issue is present.
Without the dyno day I may not have known. Edit: Jeff! Your expertise of course!
Without the Access Port I would have never seen the lower flow and would not have the data to confirm the fix.
Without your help, Jon, I would have taken longer to debug the problem.
Without our online community I couldn't source an actuator as easily.
Without WCS helping the repair would have been tougher.
I suspect that there are others both inside and outside this awesome community who are unaware that they are losing a lot of power.
There are lots of cars only pulling 197 - 200 G/s WOT
I wonder how wide spread this is...
There is no warning that this issue is present.
Without the dyno day I may not have known. Edit: Jeff! Your expertise of course!
Without the Access Port I would have never seen the lower flow and would not have the data to confirm the fix.
Without your help, Jon, I would have taken longer to debug the problem.
Without our online community I couldn't source an actuator as easily.
Without WCS helping the repair would have been tougher.
I suspect that there are others both inside and outside this awesome community who are unaware that they are losing a lot of power.
Last edited by DarkBrew; 10-05-2010 at 03:21 PM.
10-06-2010, 08:40 AM
#146
Extraordinary Engineering
Thread Starter
