on my car it had a carb.
it has one big fuel line and a small return line.
ive fitted efi now.
will the smaller return pipe effect the fuel pressure?
please only answer if you know the answer.
its just my car wont run and i need to find the definate problem with it.
cheers
mike

 

up

 

runnin carb lines on my injection engine and its fine. return is usually smaller anyway mate

 

well its the same size on mk4 efi and mk5 efi