sanad maghaireh Posted October 27, 2015 Report Share Posted October 27, 2015 can atom work in same time with the factory ECU of the car ? honda obd2 thanks Quote Link to comment Share on other sites More sharing options...
sardengineering Posted October 27, 2015 Report Share Posted October 27, 2015 Good day Sanad.The Atom will need to have direct access to the TPS, MAP, injectors and ignition circuits. The AIT and ECT may be shared. What would the factory ECU be left in place for? If I can better understand the need for the factory ECU staying in place then I can better answer your question. In hindsight, the CAN output on the Atom should be able to replicate OBD-II, will this aid your effort?Cheers! Quote Link to comment Share on other sites More sharing options...
sanad maghaireh Posted October 27, 2015 Author Report Share Posted October 27, 2015 thanx for respond in first want tell u my setup D17 engine vtec sohd obd2i boost it and i will use it daily .. use a/c without problems in future .. so my tuner told me that want to keep the factory ecu to can controll the idle and allowing to pass emissions, scan for codes and problems, and use the port to run OBD-II gauges and use Atom for VTEC and timing . fan . etc i think its close to piggy back system .. butiam dont know if it work goid and safty to my engine . thanx Quote Link to comment Share on other sites More sharing options...
sanad maghaireh Posted October 28, 2015 Author Report Share Posted October 28, 2015 or do what called (parallel installation) , does it possible with Atom ? Quote Link to comment Share on other sites More sharing options...
sardengineering Posted October 28, 2015 Report Share Posted October 28, 2015 I would advise what you are proposing, however, if you can indicate the sensors and actuators you would like the stock ECU and Atom to share I would gladly give you some feedback.Ultimately you EFI calibrator has to be comfortable with the installation because he's the one in charge of the end result you will get. In addition, to be fair, the Atom might run out of inputs and outputs to support an OEM D17 which has been turbocharged. Here's a rough breakdown of how I believe the inputs and outputs will be used4 injector channels - all in use1 ignition channel - supports single coil setup 3 spare ignition channels - fuel pump, rad fan and AC clutch2 analog temps inputs - air and coolant temperature 3 analog voltage inputs - TPS, MAP & AFR/Oil Pressure/Fuel Pressure2 digital inputs - AC request & start position/logging/high boost/non-driven wheel speed4 auxiliary outputs - tachometer signal, switched cam (VTEC), boost solenoid, 2 wire idle control solenoidCAN channel - support for OBD-II outputTo be honest this setup can be a bit much for the Atom but it should be able to work well enough for what you are looking to do. The Storm will work better giving more control, but as I said, working with your calibrator's advisories may be best.Cheers! Quote Link to comment Share on other sites More sharing options...
mapper Posted October 28, 2015 Report Share Posted October 28, 2015 I thought you may not share temp sensor signals, because it will disturb the signal. Voltage shouldn't be a problem, because voltage channels have a very high input resistance. Quote Link to comment Share on other sites More sharing options...
sardengineering Posted October 28, 2015 Report Share Posted October 28, 2015 Good day Mapper.Apparently I was mistaken in my advisory and as a result I have ill informed Sanad, my apologies. You may not share the analog temperature channels on the Atom ECU, this is only possible with all other Link ECUs where the pull-up resistor can be disabled. Disabling the pull-up allows the signal to be shared. I myself don't practice this as I prefer to have the peace of mind knowing that my channels have been connected individually. Sanad asked about a parallel install and not best practice, however, as I previously mentioned, having his calibrator weigh in might be his best bet. Assuming his calibrator will be doing the installation.From Sanad's feedback I gathered that there was a misunderstanding with respect to what the Atom was able to manage, that's why I took the time to outline how best the available channels can be used. I hope that my perspective was helpful.Thanks for raising the point Mapper, cheers! Quote Link to comment Share on other sites More sharing options...
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