Daytona 955i Fuel Lines

I recently had the tank off my 2004 D955i (and ebverything else off too whilst the engine was out) and stupidly didn't mark up which way round the fuel lines were attached.
I know the bottom is the feed and upper is the return, does it matter which way round they are attached?
It will run whichever way they are attached.

Thanks.

 

Thank you - yes it does have a red metal connector on one. I'll check which way round I have them in the morning.

 

Runs a treat.

Just a shame the fecker ticks over at 3000 rpm....

 

TuneECU and OBD lead on its way. Checked breathers not kinked or blocked. Checked hoses to stepper motor ok (new), so will see what TuneECU has to say when lead arrives.

However, I have ridden it up and down the lane at the back and the rebuilt gearbox is smooth and precise. Right chuffed with my efforts on that one!