Hi I have converted my lupo sport and put a polo gti engine in need a bit of help with the ecu I have changed the engine bay loom, ecu, key, barrel, immobiliser and the wire from the barrel but the car won't start it's sparks just no fuel the pump doesn't come in. I swaped the ecu, key and immobiliser over to the 1.4 sport and the engine runs fine the vvt works I can't find out why it wont run on the 1.6 ecu can anyone help with this?