I have a 09 with a k24 swap out of a tsx. It was turbo until it was in a frontend collision last June n now I'm returning it to stock except headerback exhaust and cai . It had hondata but I'm replacing the ECU WITH THE OEM FOR A 2.0 litre k20. Also the thermostat& housing was replaced but is it supposed to be ground if so how and where to?

The problem is the car won't run without starter fluid after u hit it with some it runs fine . But that's when I had a stock ECu for a 1.8 litre auto ex 2011 that I thought was a 2.0 litre ECu . Could that be my problem or could thermostat not being ground ?
It has new injectors /coil boots/& spark plugs. The ktuned fuel rail gets pressure and the right amount and the fuel was tested and works and gets pwr to it as well u can hear it zip on start up.

WHAT CAUSES THIS!!??