08 sequoia imi issues

after spending 6 1/2 hours on the phone with DEI and omega tech support the other day we came to the conclusion that we have no idea what the problem is...

I'm installing a DEI 561t and an xk05 in an 08 sequoia...I finished everything, got my IMI and IMO wires in the kick panel, remote started it and it shut off as soon as it started..then it did the same thing when i used the key...So i disconnected the imi wires from the xk05 and twisted them back together car side, and the car would start with the key fine, but obviously wouldn't remote start..i replaced the xk05, reflashed, reprogrammed, changed tachs, changed to voltage sense, change remote start, and even changed out harnesses...Same result....

Any ideas?

chris, I put a relay on the ignition wire on the factory keyless so it thinks the car is still off. :-)

Mike, I figured it'd be the tach, but i changed to voltage sense and hit 2 diff. tach points (white wire at data plug and uncommon wire on injectors)..

dtk, I tried it with the key in the ignition, it did the same thing...

Now that I think back on it, the only wire I didn't double check was the brake wire...I bet that was it.. Sadly the customer wanted it done that day and if i couldn't do it then he didn't want it at all...I hate when ppl just dont understand that complications can and will arrise.

I wanted to add that I also reversed the imi wires and i triple checked that it was getting power... but like I said, the ONLY  thing i didn't double check was the brake wire...