Good News for Access Tuner Race Users!
01-25-2013 | 12:07 PM
#1
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From: California
Good News for Access Tuner Race Users!
Just wanted to give everybody a heads up, I've been working with Cobb to update the Access Tuner Race software for 2006-2008 6 port automatic RX-8's, and they've fixed the idle tables and added the speed limiter tables too! My 8 finally idles without any vibration in gear and is just sooo smooooth! The engineer at Cobb said he would be uploading this to the release server soon so anybody who requests ATR for their automatic 8 should be getting the updated version. I hope this helps out our community!
-Lawrence
-Lawrence
01-25-2013 | 07:07 PM
#3
From a conversation I had with Oltmann:
There is a sort of secondary closed loop that the NB O2 drives during cruise conditions, so you have to disconnect the NB O2 or it will drive the A/F target (NOT THE FUEL TRIM) to get back to stoich. Hope that info helps.
The biggest failure with ATR in its current form is the labeling and explanation of all the tables. I just recently realized that Idle correction was really idle timing. And it took me forever to find out that CL target A is for AC off and target B is for AC on. Documentation is a big fail.
Originally Posted by oltmann
When tuning for lean targets, my preference is to set closed loop targets A to 0.95. This table is wrong in AccessTuner Race, essentially inverted, so that gives you 1.05 equiv or ~15.4:1 AFR gas. Then I use the MAF table to lean it further.
Originally Posted by oltmann
The closed loop target tables are also misnamed, they are always used to calculate fueling, past 6000 rpm the rightmost column is used, exiting closed loop just means turning off feedback control and turning on high load enrichment compensation (aka open loop.)
The biggest failure with ATR in its current form is the labeling and explanation of all the tables. I just recently realized that Idle correction was really idle timing. And it took me forever to find out that CL target A is for AC off and target B is for AC on. Documentation is a big fail.
01-25-2013 | 07:36 PM
#5
The magnitude of the requested number in the fuel map is not meaningful in that sense. The number specified does not equate to the the actual AFR generated. You will make faster progress once you admit to this reality.
01-25-2013 | 07:43 PM
#6
Would be better to multiply it by a constant to get rid of the "AFR" correlation that doesn't correlate and tune from there. 
It is just a number...and you get what you get....and you won't find 2 cars that can use exactly the same number and get the same outputed Lamba reading.....
It is just a number...and you get what you get....and you won't find 2 cars that can use exactly the same number and get the same outputed Lamba reading.....
01-28-2013 | 02:02 AM
#9
3-wheeler
Joined: Dec 2005
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From: Phoenix
From a conversation I had with Oltmann:
There is a sort of secondary closed loop that the NB O2 drives during cruise conditions, so you have to disconnect the NB O2 or it will drive the A/F target (NOT THE FUEL TRIM) to get back to stoich. Hope that info helps.
The biggest failure with ATR in its current form is the labeling and explanation of all the tables. I just recently realized that Idle correction was really idle timing. And it took me forever to find out that CL target A is for AC off and target B is for AC on. Documentation is a big fail.
There is a sort of secondary closed loop that the NB O2 drives during cruise conditions, so you have to disconnect the NB O2 or it will drive the A/F target (NOT THE FUEL TRIM) to get back to stoich. Hope that info helps.
The biggest failure with ATR in its current form is the labeling and explanation of all the tables. I just recently realized that Idle correction was really idle timing. And it took me forever to find out that CL target A is for AC off and target B is for AC on. Documentation is a big fail.
Is there any interaction between the A and B tables that can be seen?
Nice job on the adjustments from COBB. I'm surprised they allowed an engineer to spend cycles on improving the RX8 software.
but i dont have an automatic.
01-28-2013 | 02:01 PM
#11
Just tried a table setting CL A and B drastically different from each other. AFR did not change with AC on vs off and CL B didn't seem to have any effect at all. Been months since I've seriously looked at this stuff, sorry for the misinformation.
01-29-2013 | 05:20 AM
#12
3-wheeler
Joined: Dec 2005
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From: Phoenix
No need to apologize! There have been some great findings over the last year with the AP tables so I'm glad people are still looking into their true function.
03-30-2013 | 03:38 PM
#16
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From: CT
03-30-2013 | 06:20 PM
#19
I'm sure Cobb will take care of it, they replaced the screen on my AP for free even though I bought it used and it was out of warranty!
Just updated the firmware on mine and everything went fine.
Just updated the firmware on mine and everything went fine.
04-23-2015 | 09:45 AM
#20
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From: Charlotte, NC
I hate to bump an old thread - but I'm attempting to request the ATR software from Cobb, and the request form doesn't appear to have anything "specific" for a USDM 2008 M/T. Based on this thread, it appears the software is out there - should I just request for a 2006 M/T? That appears to be the latest USDM year listed on the request form.
FYI: This is the request form/site I'm using: COBB Tuning - Mazda Accesstuner Race
FYI: This is the request form/site I'm using: COBB Tuning - Mazda Accesstuner Race
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