changoo

i have a 1999.5 a4 quattro and wen i got it, it would never build over 4psi so the other day a buddy and i swaped a turbo he had laying aroud off a 2003 passat onto it the first drive we went on it hit 18psi so we adjusted it back down to stock but now its missing on the number one coil i unplug the coil when idleing and nothing. like a bad coil; but wne driving it cuts in and out i ran a diagnostics and got injectors 1,2,3,4 circut open fule tank vent open missfire on 1,2,4 and random missfire i cleared the codes and got only the missfire on cly 1 is only left

4Driver4

I'll bite. How was this done?