12mm fuel line 306 hdi

[Poodle]

People have tried it before, but have never proved that it gave any benefit. I've yet to see somebody find the standard fuel line to be a restriction, it doesn't seem to be an issue on the cars that were running 200bhp+, so unless you're heading north of that i don't see the point. It's not like an xud where the pump has to draw the fuel itself, the inlet lines are pressurised and fed by the lift pump.