aps997a in 06 mazda 3

Kind of a long thread so thank you for your time...

So here's the deal, I installed the AVOX aps997a remote start unit with the FLCAN module flashed for this vehicle and bypass is complete.  I have it hooked up in Tach mode and the tach is learned as i get the confirmation from the alarm.  The problem i am having is that when i remote start it, the very first crank doesn't finish...it quits right as it gets the signal to turn.  These alarms will try three times to start before it quits for good, and without fail it will start the second time it tries, EVERYTIME, without me having to manually try again with the remote.  I do have the second ignition hooked up, but the pink / YELLOW tested as accessory not ignition but i hooked it up anyways.  Could that be my problem?  Also, his battery is constantly dying, so a new battery might fix the situation, but wanted other input. 

I thought it might be the tach signal so I tried another tach wire, relearned TACH and again the same result....dies on first try and starts the second time.  I also tried to do voltage sense and thats where it starts to get a little weird.  When I program it to voltage sense, (recheck that it's programmed by the chirps) and try to remote start it, the system tells me that the tach is not learned.  Why would it tell me that if its in volt/sense mode?    

In the manual it shows a "DBI tach" setting, but there's no explanation of what that is.  I tried it there and it starts, but dies about a second after.  In the diagnostics part of the remote start menu....action nine...I get 3 and 4 chirp settings but nothing in the manual shows me those options and what they would do.  same goes with action 14....i get a 3rd option and no explanation of that setting in the manual either. 

If anybody has ideas about what it could be and what those other options are please let me know.  I don't have the car with me, but was trying to get some options to try to get it to work properly. 

Anybody have any ideas....?  Chris Luongo.....ChrisWallace187...?

Cool thanks....I'll try hooking up the tach there and hopefully it'll work.  I do have the databus connection to the alarm brain so it's worth a shot.  I did look for the theft light but didn't see anything but i'll check again when he comes back.  this is the only thing holding the install from being "completely" done...but it does start otherwise on the second turn everytime, but i'd like to get to the root of this problem and have it start the first time. 

Any idea why it won't work in volt/sense mode, and why it says that tach isn't learned when it's programmed for volt/sense?