After upgrading my fuel pump to a bosch I have found that I am getting a small amount of black smoke on fast take off. I am assuming that it is now running a bit rich, however I thought that since I have not changed my FPR, how is this possible? I thought the FPR would keep the fuel flowing at the same rate no matter what pump was on the car? Could it be something else?

Cheers for the help
Mick

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Old Dog