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Hi guys. I have a 2007 225. Feul pump is OEM and has no return line to regulator. In 2nd gear upwards when the car starts boosting hard it cuts feul completely. Doesn't backfire when this happens which means it's not an ignition cut. 3 feul pump units does exactly the same. It seems tge pump is overheating cause the problem gets worse on a hot day. Does anyone have legit advise or had this issue in the past.
