Quote:
Originally Posted by T_H_O_M_A_S
i know a few guys who upgraded the same b58 engine with the newer pump without any hassle , dunno why mp had these probs software and hardware ??
ive also asked what they had done to it on the hardware side , but havent got any reply since a few weeks now . since its a bosch pump i did expect the same
as i went with hdp5evo , and it did , fired right up without hickupps no high rail pressures to be seen . it might be capable of higher rates compared to 5evo , but that , at least to me , depends what your tuner has set in the tune .
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I'm not sure what MP is talking about either. Isn't the HPFP just maintaining a semi-constant rail pressure to feed the injectors? The HDP6 is able to better maintain a set rail pressure under higher fuel flow rates with the pressure governed by the fuel rail sensor that is all. Is this not correct?