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I tried making up the elbows out of plain EFI line, but they kept kinking. Then I thought of Tangerine Racing's 914 injector elbows. They are the same size as the fuel filter elbows on the BMW, and they are already bent.
So I ordered them. Chris shipped them out really fast. Kudos for the great service and great price.
And they are a perfect fit.

@racerchris you have a new market. Just advertise on Bimmerfest.com. Reading the old posts there they bitch about finding the fuel filter elbow lines all the time.