04-09-2007, 10:48 PM
The word stand-alone and piggy-back gets thrown around a lot. The S-AFC is a full piggy-back, the AEM is a full standalone, DSMLink or Hondata or stuff like that is an engine management system, but cannot "stand-alone" as a pun.
My dsmlink acts almost as a standalone in the engine department with seperate timing, fuel, airflow, deadtime, global, blah blah blah shit, but it uses the ECU to create tables and make it much easier to tune, but it never lies to the ECU like a piggyback S-AFC. I dont know wether dsmlink is a lot like Hondata, but I can control all my CELs and wether I want them to be disregarded, I can turn off fpr, egr, etc solenoids, turn on fans, coolant offsets, anti-lag, NLTS, stutterbox, nitrous controls, and a lot more.
However, I dont know about Audi, but Mitsus and a lot of other cars I have worked on have seperate SRS modules, TCU (auto).
Looking at this you would say dsmlink or equivalents are far below a stand-alone, but look at your Hydra, all it is is another ECU that has different engine parameters, but works almost the same as a stock ECU. I Dont understand why people would use Hydra, but are the WRX's ECUs hard to control? I know there is no point on a DSM to go full AEM unless your wanting to run a full-speed density setup, typically only on cars running over 700whp because of lack of ability to get a MAF that reads that, and although DSMLink does have overrun using MAP ability, it is not quite as accurate as would be an AEM based system.
Scotty can you explain what tuning software or standalones Audi people use? I dont see how it can be a true stand-alone if there is still a stock ECU, and who would run a full standalone setup for a car with emissions? Maybe im too used to DSMs where the true standalone isnt advantageous till serious horsepower? I could not see the reason for a 700-1500whp car running emission equipment, and if they are not making that much horsepower, there is obviously no need for the hassle of stand-alone when much easier to tune and daily drive piggybacks are out there.
Let me know the answer to my questions, I truly dont know.
My dsmlink acts almost as a standalone in the engine department with seperate timing, fuel, airflow, deadtime, global, blah blah blah shit, but it uses the ECU to create tables and make it much easier to tune, but it never lies to the ECU like a piggyback S-AFC. I dont know wether dsmlink is a lot like Hondata, but I can control all my CELs and wether I want them to be disregarded, I can turn off fpr, egr, etc solenoids, turn on fans, coolant offsets, anti-lag, NLTS, stutterbox, nitrous controls, and a lot more.
However, I dont know about Audi, but Mitsus and a lot of other cars I have worked on have seperate SRS modules, TCU (auto).
Looking at this you would say dsmlink or equivalents are far below a stand-alone, but look at your Hydra, all it is is another ECU that has different engine parameters, but works almost the same as a stock ECU. I Dont understand why people would use Hydra, but are the WRX's ECUs hard to control? I know there is no point on a DSM to go full AEM unless your wanting to run a full-speed density setup, typically only on cars running over 700whp because of lack of ability to get a MAF that reads that, and although DSMLink does have overrun using MAP ability, it is not quite as accurate as would be an AEM based system.
Scotty can you explain what tuning software or standalones Audi people use? I dont see how it can be a true stand-alone if there is still a stock ECU, and who would run a full standalone setup for a car with emissions? Maybe im too used to DSMs where the true standalone isnt advantageous till serious horsepower? I could not see the reason for a 700-1500whp car running emission equipment, and if they are not making that much horsepower, there is obviously no need for the hassle of stand-alone when much easier to tune and daily drive piggybacks are out there.
Let me know the answer to my questions, I truly dont know.
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