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DBA Style Ignition for 1st Generation CBA vehicles


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#1 2009redgtr

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Posted 01 August 2018 - 06:39 PM

From Cobb

 

 

DBA Style Ignition for 1st Generation CBA Ignition Files

All CBA (2008-2011 USDM) vehicles now feature the option to implement the newer DBA (2012+ USDM) style ignitions timing strategy.  Producing a more unified and simple approach to tuning and troubleshooting ignition timing for all GTRs.

I would like to use this option however I need the following:

 

Ignition Tables (CBA): Ignition - High Det. Ignition - Low Det. (CBA Strategy) 

You will want to populate both of these tables with the timing you want to run, oftentimes you can paste from a DBA map to make this work. 

Here's the link to the page that explains

https://cobbtuning.a...ing on CBA Cars

 

 

I've attached some screenshots from the above link.

 

Thanks in advance

 

Attached Thumbnails

  • dba 1.png
  • dba.png


#2 Ben-Stian

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Posted 02 August 2018 - 01:21 AM

Seems nice:) Wonder if this will work on a Euro-spec car as well? On Cobbs`s webpage, I couldnt find the above statement (2008-2011 USDM), so I believe it will work on the other markeds as well?


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#3 tjlazer

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Posted 10 October 2018 - 04:45 PM

Are those screen shots the DBA timing to use?


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#4 240Z TwinTurbo

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Posted 10 October 2018 - 05:53 PM

If you spent a lot of time on the tune then you can do a lot of logging under all conditions to capture as much data from the ignition map.  You will be logging actual timing, which is what the DBA map uses and not the filtered map used by CBA.  You then load the data in Excel and create a lookup table that can be used to populate a timing map based on actual logged timing.  So for example, you would find all data captured for a given RPM and IPW breakpoint (within a defined range +/-) and then use your choice of statistical method to turn that data set into a single value, which is then used to populate your new timing table.  It's a little bit of work, but would hopefully allow you to populate the new DBA map, which uses actual timing values.

 

The other option is to data log your timing, RPM, IPW under boost first.  Load a stock DBA timing curve and then modify your on boost numbers to match your data log.  Once I get my new injectors for the E85 conversion I plan on swapping to the DBA ignition strategy. If I create the lookup table in excel then i'll post it for others to use.


Edited by 240Z TwinTurbo, 10 October 2018 - 05:54 PM.

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#5 2009redgtr

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Posted 12 October 2018 - 05:52 AM

I pulled those from the Cobb website for explaining the DBA timing, so i wouldn't trust those screenshots for populating those fields.  240Z TwinTurbo I would be interested in seeing the table when it's finished. 



#6 240Z TwinTurbo

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Posted 26 December 2018 - 08:56 PM

Going to work on this in the coming weeks, but at least I can post the DBA Low Det Table from a Cobb Stage 2 map for 93 octane if this helps you.  You'll have to modify for higher Theoretical PW's since this only goes to 28.  I have mine scaled to 35, but haven't run it yet.  I'll post my final map when I have it tuned out.  Too dang cold right now so tires won't get traction so hard to make passes on the street to datalog.

 

As best I can tell us CBA folks can only use the 1:1 ignition tables and don't get the potential benefit of Dynamic Advance like actual DBA cars.  Regardless, it will be nice to have a map that corresponds with the datalog instead of the seemingly arbitrary values used by CBA Ignition Low Det.

 

For the Ignition High Det I will likely just use the DBA Low Det table and paste it over, then select the entire map and lower all of the values 3-4 degrees.  It doesn't switch over until -1400 so you gotta have a really jacked up tune to hit that table.

Attached Thumbnails

  • DBA_IgnitionLowDet_93.jpg

Edited by 240Z TwinTurbo, 26 December 2018 - 09:04 PM.

1971 Datsun 240Z (Let the restoration begin!)

2006 EVO IX (663hp/527tq @ wheels Shell 93 pump gas)
2009 GTR Premium (707hp/628tq @ wheels Shell 93 pump gas / [email protected])
2019 Stinger GT AWD (stock)

DIY700 - 700hp on a Budget

BW S366 SX-E (6668) TwinScroll Experiment

CURT BROWN 2.15L S362 vs S366 Results - 93 Pump




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