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Hi Will, how much fuel was in your tank at the time? In my 320i it is possible to starve the fuel pickup and stall the engine during a hard right-hand turn if the fuel level is down to 1/4 or less.
Cars with fuel injection circulate more fuel than the engine ever needs, and pressure at the injector(s) is controlled by a spring-loaded regulator.
(There are exceptions... like diesels, direct injection, etc.) So usually you can use any random fuel pump as long as it is meant for fuel injection. It`s either enough or it isn`t. Also, when the engine is off, the system should still hold pressure to prevent vapor lock and whatnot. Losing pressure could cause hard starts, and it could be a fault with the pump, injector(s), or regulator (or a leaky connection).
As you know, I`m not an expert on the Metro, but I`m pretty sure this info is relevant...
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