what size pipe would i need on my zetec iam gonna be running turbo around 150-200 bhp hopfully. but later i want to fit some rods and pistons.and up the bhp.
i want to fit a size to be able to cope later on. on my fuel pump the outlet is for an 8mm nylon tube but iam gonna change it for rubber. what bhp will this sort of setup cope with. or would it be best just to go with the max size i could fit.
thanks adam

8mm will be fine for loads more than a turbo Zetec can muster - probably good for 350+ bhp.