it can be done mate, tahts what my installer told me too... he said he had 10 yrs experience, and told me that both turbo timers and remote start cant go hand in hand. i figured a way through it. first valet the car, that means leave the car running while u take out the keys, then arm the alarm, then shut off the car with the remote start feature, once u do this, the turbo timer will take the job and shuts off accordin to the time.. hope it helps.. mine worked
p/s: u have to arm the car first b3fore using the remote to shut the engine off.. coz, once u shut off the car before arming the car, u can only arm the car once the engine stops. and also remember to disable the ignition controlled door locks, if you dont, once the turbo timer is off, the car will disarm again ..