car warms up then dies but will start up and run for 30 sec and die

punched281

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I am in my finishing stages of my motor build. I took the car to the dyno to have it tuned and the tuner could not get past a weird temp reading. I got that all figured out but now the car will run until it is warm and then die. It is like I am using the key to turn it off. While warming up and idling the theft light will blink a few times then turn off. After it warms up and dies I can restart it but this time the theft light blinks the whole time and will only stay running for about 30 seconds.

It doesnt chug or anything, I know I have fuel pressure in the line, I looked the spark jump and doesn't look like it is cutting spark
 

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