remote start, 2004 subaru wrx

why don't you do the following test ? Start the car with the key, wait till it auto learns the tach, then activate the idle mode, remove the key and see if it would take over ?

Are you sure the car is not in valet mode ?

ground while running is usually used for bypass module.

No need to hook up if it doesn't have bypass unit. Did you wait until the auto tach learn had finished ( 3 park light flashes ) and then press the start button for 3 seconds ( activate the idle mode ) ? Park lights come on before you turn the key off ?

If it still wouldn't stay running, next step try the tachless mode ( disconnect the tach wire ). Ok if tach source is changed, you will have to do a system reset. Other things you need to check : like the 2 12 v wires to the module, ignition, acc & starter wires are connected properly. 

Yes it sounds like everything i am having! and i do have the G11 XR version. i still have yet to solve the problem and i have talked to ultra tech support and basiclly what i got out of him was your unit just simply isnt Tach learning. i told him i have it to an injector wire that i can verify ACv  with a meter. he then told me i must have it to the wrong injector wire which after looking i cant be because there are always only two one is a constant 12v when key is on from a relay and the other is straight from the ECM which is in a Waveform type voltage. he told me it must be a changing current which would be a "waveform" but he says it must be wrong,but it is the ONLY waveform type current for the injectors because there are only 2 wires! so idk?  i left him a MSG and i got no response back.  i was thinking the unit was bad but i have another unit laying around that i can swap and it does the same thing.??????