Car trys to start then dies. ran at first but now will not
 

Ok i changed the radiator and found a spot for my temp sensor. I did not think i messed with anything else. I messed around back by the cas to hook up the dash temp sensor.
its DIYPNP so i reloaded firmware and base map.

after radiator and down pipe removal and new rad installed and downpipe reattached. started the car no problem ran for about 30sec-90sec then died. just all of a sudden died would try and start back run for a second after the key was released even build rpm to 2k or so but not start really.
Came back 10min later started for 30-45 sec then died again.

I changed Cas
coil
battery
afr look fine.
reflashed firmware and reset everything

I am so frustrated.