There has been a lot of mis information lately about the whole airbag issue. I did some digging and found these facts along the way for you to use in your decision making regarding seat lowering and air bag operation for both seats.
The position sensor
DOES control the air bag by proximity to the steering wheel for force adjustment.
If the seat is lowered and the switch is not installed correctly the force of the airbag is unknown
but it WILL still deploy if the conditions are met for it.
All this info is a mute point though because
you will be totally liable for the failure should it be modified so buyer beware.
The passenger seats have a new system in the Viper that will correctly determine the weight of an occupant and adjust the airbag to on or off. It has some criteria to be met though as it is MUCH more advanced than any system has been before it.
Between 65 and 105 pounds the system will determine the need for the airbag at all.
This will be based on a correctly seated person! This is true for all the levels of adjustment. You must sit in the seat correctly and distribute your weight evenly in the seat without leaning for/aft or side to side. Within seconds after starting the car the system will "lock in" your values. If this is not done correctly and the light is incorrect for your weight it is best to exit the running vehicle and wait 2-6 minutes before re entering the vehicle. at 2 minutes the corrected value is 80% and as the minutes increase to 6 minutes the corrected percentage gets closer to 100. The system also monitors and updates your weight and "position" in the vehicle every 2 minutes after that.
At 120+ pounds the airbag will still be monitored by the system but will be in the
ON mode. It is still critical that your weight is evenly distributed though as it senses this every 2 minutes.
There is no sensors in the bolster areas so if you are a wide body like myself and there is a substantial portion of your weight there you may actually get a false reading if you are not as heavy as me per se.
Just a little info for you to share, and it is always good to know the facts when you are planning on any mods that can affect safety.
Take care,
Mark