The problems that surface with the stage 1 upgrade.....there is a ton of data,it looks like the bigger culprit is the lower sensor down at the a/c compressor....it is very close and the wire harness is angled and under a bit of stress.
I was under the car yesterday , it is very tight under there and hard to see how the sensor is attached to the pipe....I read where it is helpfull to turn the sensor 180 degrees....anyone tried it and how is it done ??

 

Sounds like the culprit for gms1 issues

 

My sensor is turned 180* so it faces the radiator and fans. I had to modify my top support brackets for the radiator a little to get a decent amount of clearance. This may not be necessary in some cases but it gave me piece of mind. To rotate it take out the screw securing the sensor and spin it around to face the front of the car. Then put the screw back in the other hole to secure the sensor.

 

I'm gonna try this.

 

that is what my dealer did but he did not have to mod the radiator the wire is just a really tight fit

when he installed it he asked me to watch because he said I knew more then him about it lol when we got to the bottom one he said that way would work and it has....I was tuned over it a month later I made 282 303 with GMS1 everything falls bad up top 5450rpm

anyways yes this way works