So going to buy fuel line tomorrow and just wanted to check what people have used for a 180 BHP zetec running throttle bodies. Plan on 8mm id flow 6mm ID return or should I use 6mm id flow and return or 8mm id flow and return?

thanks
Dave Bailey

Use 8mm flow and return, thats what Ive used on my V6, which at the moment produces 170 bhp. Plus if you run them both the same, just need one roll of copper pipe. HTH Ray.

Definitely 8mm for both - should be good up to 300ish bhp

thanks! 8mm it is then