First one is, I looked through my NX manual, and it said to not let the bottle pressure get below 1000psi, and not above 1050 psi or else it will run rich/lean. I have a bottle heater, but ho will I know when the pressure is too high or too low without going back to the bottle and looking at it? Also, Where I mounted my bottle, it touches the back of the car and the side mounting peice in the wheel well. If I put a peice of rubber between these places, will the bottle get too hot for them when the warmer is on?

 

you will have to check the guage or buy a swithced heater the turns itself on and off based on bottle pressure. the bottle should not get hot enought to cause any problems with the rubber.

 

Doesn't the NX bottle heater do that?

 

yes the NX does I think the ZEX and TNT do also.