Has anyone tried this Piggyback engine management system?
10-08-2003, 08:15 AM
#1
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Has anyone tried this Piggyback engine management system?
This thread started <a href="https://forums.audiworld.com/s4/msgs/1418235.phtml">here</a> but I didn't get a response from SlvrBullet Reloaded
What do you guys think? How hard would it be for someone that has built up American Muscle cars and has some computer experience to make this work on our cars?
<a href="http://www.motodyne.com/frames/audi_biturbo.html">
<img src="http://www.motodyne.com/images/speedproCcom.jpg"></a>
There's a demo of the software <a href="http://www.fuelairspark.com/Downloads/Software/C-ComWP%20DEMO.exe">here</a><ul><li><a href="http://www.fuelairspark.com/Information/Support/C-ComHelp/v1-00/">http://www.fuelairspark.com/Information/Support/C-ComHelp/v1-00/</a</li></ul>
What do you guys think? How hard would it be for someone that has built up American Muscle cars and has some computer experience to make this work on our cars?
<a href="http://www.motodyne.com/frames/audi_biturbo.html">
<img src="http://www.motodyne.com/images/speedproCcom.jpg"></a>
There's a demo of the software <a href="http://www.fuelairspark.com/Downloads/Software/C-ComWP%20DEMO.exe">here</a><ul><li><a href="http://www.fuelairspark.com/Information/Support/C-ComHelp/v1-00/">http://www.fuelairspark.com/Information/Support/C-ComHelp/v1-00/</a</li></ul>
10-08-2003, 08:21 AM
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I don't get it - that seems contradictory. Stand-alone/Parallel? Have you used it?
how successful would it be? I'd love to be able to tune my own car. I'm running stock for now, but I don't want to be limited to a program for a certain turbo kit.
Thanks
Thanks
10-08-2003, 08:41 AM
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Answers inside.
A piggyback ECU is an electronic device that conditions electronic/electrical signals from engine sensors. It intercepts sensor ouput before it reaches the OEM ECU, alters the signal, then sends the new "conditioned" signal to the OEM ECU. That's what a "piggyback" ECU does. It fools the OEM ECU. By doing this, you can adjust fuel and such.
A stand-alone ECU is like the OEM one. It fulfills all duties and such relating to engine management. It may control other systems as well (cooling, AC, etc.) but usually isn't capable of doing that.
When a stand-alone ECU is not capable of controlling other systems (cooling, AC, etc.), then you retain the factory controller to regulate those systems the stand-alone aftermarket ECU can't control. You may need to keep the OEM ECU for immobilizer related issues (N/A to S4). You now have two ECUs in the car, and both are running in "parallel" existance with each other. They are not connected in any way, but function on their own. The OEM ECU will have a lot of DTCs, because it's missing sensor info.
Hope you understand now.
A stand-alone ECU is like the OEM one. It fulfills all duties and such relating to engine management. It may control other systems as well (cooling, AC, etc.) but usually isn't capable of doing that.
When a stand-alone ECU is not capable of controlling other systems (cooling, AC, etc.), then you retain the factory controller to regulate those systems the stand-alone aftermarket ECU can't control. You may need to keep the OEM ECU for immobilizer related issues (N/A to S4). You now have two ECUs in the car, and both are running in "parallel" existance with each other. They are not connected in any way, but function on their own. The OEM ECU will have a lot of DTCs, because it's missing sensor info.
Hope you understand now.
10-08-2003, 09:01 AM
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I'd rather do it myself. Why wait for an update when you can DIY?
When I retire (a few years from now), I plan on making the S4 the project car and do some crazy stuff like the guys in Poland (look over on Audizine)
Personally, I think that the tuners have part of their kits correct, and parts of it completely wrong. Why wait for a new program, when I am perfectly capable of tuning the car.
Look at it this way, the hard part in programming our car isn't the programming - yes, it's an art, but it's not the difficult part.
The difficult part is the damned Bosch Motronic ECU that the tuners know how to program, but we don't.
If I had access to the equipment and manuals for Motronics, I'd go that way. But since I want to do it myself, I'm looking elsewhere.
Personally, I think that the tuners have part of their kits correct, and parts of it completely wrong. Why wait for a new program, when I am perfectly capable of tuning the car.
Look at it this way, the hard part in programming our car isn't the programming - yes, it's an art, but it's not the difficult part.
The difficult part is the damned Bosch Motronic ECU that the tuners know how to program, but we don't.
If I had access to the equipment and manuals for Motronics, I'd go that way. But since I want to do it myself, I'm looking elsewhere.
