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Interest in DIY chip tuning?

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Old 09-24-2009, 05:31 PM
  #61  
toddk911
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Originally Posted by Rogue_Ant
Yes. The basics - the three timing and fuel maps, RPM limit and FQS scaling:
Will also include the AIT table, and Baro constant. These will be useful for those wanting to convert to MAF, as both compensations will need to be flattened.
Is the different % on the verticals the % of throttle for part throttle maps?
Old 09-24-2009, 05:34 PM
  #62  
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Originally Posted by joeytoad83
abit off topic rougue how do you have aldl datalogging working?
No ALDL available. Direct scan / cell tracing _should_ be out shortly, with the next version of TunerPro (the TunerPro author is a little behind schedule). And when it is publically available, I'll make sure to update the files necessary to support it.


-Rogue
Old 09-24-2009, 05:36 PM
  #63  
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Originally Posted by Nurburgring951
Coming from the Lancer Evolution community where DIY ECU tuning is widespread and pretty well documented, this would be awesome.

VERY Interested in this. Thanks for your work Rogue.
My first real tuning experience was in the DSM community, very open source oriented stuff. (as is the Evo stuff)
IMO, this type of stuff should have been done long ago for the 951...


-Rogue
Old 09-24-2009, 05:39 PM
  #64  
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Originally Posted by toddk911
Is the different % on the verticals the % of throttle for part throttle maps?
No, the horizontal axis on the PT maps is the DME's "load" calculation. This is basically an 'airflow-per-rpm' value. Higher number = more load.
The DME never knows throttle %. It only knows if at idle, part-throttle, or 'WOT' (which is trigger via the KLR).


-Rogue

Last edited by Rogue_Ant; 09-24-2009 at 05:58 PM.
Old 09-24-2009, 05:42 PM
  #65  
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Originally Posted by Rogue_Ant
No ALDL available. Direct scan / cell tracing _should_ be out shortly, with the next version of TunerPro (the TunerPro author is a little behind schedule). And when it is publically available, I'll make sure to update the files necessary to support it.


-Rogue
sweet. i asked about aldl cause i clicked on your knock counter link and seen it said aldl on the bottom.
Old 09-24-2009, 05:48 PM
  #66  
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An ALDL requires a datastream from the DME. The DME is able to output a serial data stream; unfortunately, this ability is disabled in the factory coding. Something I'm looking into - just need more days in the week!


-Rogue
Old 09-24-2009, 05:49 PM
  #67  
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Originally Posted by 2bridges
Big, long, windy, PM sent in reply
Got it, thanks
Old 09-24-2009, 06:05 PM
  #68  
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Good stuff Rogue. Tobad i am running stand alone if i was. i would go with u on this
Old 09-24-2009, 06:08 PM
  #69  
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How can you explane the true MAF chip´s? Like Russel Barry has.

Etienne
Old 09-24-2009, 06:40 PM
  #70  
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Originally Posted by etiennekuh
How can you explane the true MAF chip´s? Like Russel Barry has.

Etienne
I'm not sure quite what you mean, perhaps something is getting lost in translation...?

AFAIK, only one company, VR, has a true MAF chip, meaning they have done the work to disassemble the factory code, then change the transfer function portion and get a working result (putting it simply).


-Rogue
Old 09-24-2009, 06:41 PM
  #71  
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Originally Posted by reno808
Good stuff Rogue. Tobad i am running stand alone if i was. i would go with u on this
No worries, to each their own!
Old 09-24-2009, 07:18 PM
  #72  
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Originally Posted by Rogue_Ant
I'm not sure quite what you mean, perhaps something is getting lost in translation...?

AFAIK, only one company, VR, has a true MAF chip, meaning they have done the work to disassemble the factory code, then change the transfer function portion and get a working result (putting it simply).


-Rogue
I am not sure what you mean with lost in translation?

I can't find the thread about it, but Russel is talking about a true MAF chip. Yes I know VR has a very good MAF chip
Old 09-24-2009, 07:45 PM
  #73  
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Lost in translation - meaning I was not sure what you meant.

I have not heard anything about Russel making a true MAF chip.


-Rogue
Old 09-25-2009, 08:46 AM
  #74  
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Seems to be a bit of confusion here as to what my MAF chips do, or don't do. When someone orders a chip for a MAF and they have a piggyback in place then the chip they get is an AFM chip tweaked for the MAF's behavior.

When Dave Lindsey and I started working on a MAF chip, he installed two of his MAF meters of different calibration on his car in front of the AFM. The AFM was running the car, the two meters were being logged. From that data, I modified the AFM transfer function in the chip to read the MAF signal directly and perform correctly. This chip was designed for a specific MAF, and will not work with another unit of different calibration. Dave's car blew a turbo during our testing, and that has absolutely nothing to do with the chip. The center shaft blew right out the exhaust pipe. So to say that ONLY Vitesse, APE, and Hally have created MAF chips is simply not true. And once again, the people on this thread saying this have never used my products and I would really prefer they limit their comments to facts they have first hand experience with.

Dave and Mike Lindsey have spent more hours than either of them can count supporting people even if they have an obscure configuration, and some not even using their products. I strongly feel their support is second to none, including my own. But that's not for lack of interest or caring on my part, my life has changed drastically since I started doing this stuff. My family is split apart, one of my biggest computer consulting clients went out of business. I travel from MA to NY often to see my 5yr old son, and the rest of the time I'm trying to make a life here. I sunk over 20K of my own money into development of chips and kits for the 3.2L 911 community. Not one has sold. So now I'm selling the 911 and moving on to the 928 and 968. I have told people some of this, and that my availability might not always be optimal. I apologize for this, but life happens. I'm not going anywhere, I'll always be here, I'll always be developing new products, and I will always do my best to support them.

Rich, good luck with the new chip and overall project.

Regards,
Russell
Found it
Old 09-25-2009, 08:48 AM
  #75  
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Originally Posted by Rogue_Ant
No, the horizontal axis on the PT maps is the DME's "load" calculation. This is basically an 'airflow-per-rpm' value. Higher number = more load.
The DME never knows throttle %. It only knows if at idle, part-throttle, or 'WOT' (which is trigger via the KLR).


-Rogue
Oh ok. Learned something new today.

So load (air flow per rpm) would be taking into account boost signal?


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