Car was running fine until i fitted the new parts, the Ford racing 65mm throttle body has been used, the MAC cold air intake was unused. The car starts and idles fine, but mainly [like about 75 - 85%] it stalls as soon as you put it in drive or reverse it just dies, no erratic tickover, just instant silence. I tried cleaning the IAC, but its made no difference, i tried disconnecting the battery, [flashed + to - ] and it was ok when i went out, next day, its stalling again, any ideas what to try? BTW it drives perfectly, if i stop at the lights, leave it in drive, it idles fine. But its left me not wanting to put it in neutral anywhere, in case when i shift back it croaks.