I bought a star chip on the weekend. its out of a r19 but will fit the clio. took the old chip out and replaced it with the new one. put the pcb back in the car tried to start it up and it wouldnt fire up. it was turning over but there was no ignition. So i took the star chip out and put the old chip back in but with the same problem. Took the pcb back out and had a look at, there seems to be no damage to the board or tracks that i can see. ive worked with pcbs before in work so know what im doing! does anything need to be reset like the immobiliser. has anyone fitted a chip themselves as i need to know if it was straight forward. or do i need to find a new ecu.