Pretty much comes down to internal diameter of the hose, and length.
Longer thinner hose will flow less than a shorter fatter hose.
Different fittings on the hoses can make a difference too. I think some of that coiled hose is probably only 6mm internal, and its fitted over a male fitting so probably lucky if its got a 4mm hole through it.
If it were me I'd probably look at some straight 12mm hose, with decent fittings, and ideally one of those retracting hose reels...
Steve
1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
1988 120 with rust and potential
1999 300tdi 130 single cab - "stock as bro"
2003 D2a Td5 - the boss's daily drive
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