wenlyone said:
i have obdII, will i be able to hide ems from the emissions test? I know hondata has preset maps, isn't that easier for people who are just starting?
If you're OBD-II, Hondata won't pass emissions either. People think that it will because it uses a stock Honda ECU.
WRONG! Hondata only uses stock Honda OBD-I ECU's, which means that when you go into smog, after the scan the barcode on the frame of your car inside by the driver's side door, they will plug a cable into your service port. OBD-I ECU's will not send a signal to this cable. In order to pass smog in an OBD-II car, you must have an OBD-II compliant ECU. Since most aftermarket companies don't make them, just about every standalone is not smog legal. The exception, once again, is the EFI PMS. That runs parallel to the stock ECU. It has 3 modes of operation. Disabled, supplemental or full. In other words, you can disable it and use only your stock ECU, you can run it with your stock ECU and just have it map anything out of the ordinary (boost, nitrous, etc.), or you can have it bypass the ECU and run all your maps off of it, just like a full standalone. It does not alter signals going to the ECU like a piggyback. It actually has the capability to control the timing and injectors on it's own and has it's own set of maps.
All the devices in question have base maps available from their respective companies that can be downloaded. AEM, EFI and Hondata (yuck!) all provide stock maps...