Quote:
Originally Posted by wiles335i
I have a bit of experinace with the N54.
Had and sold to coworker. 335i 40k 07, No HPFP issues.
My buddys 335i 53k 07, No HPFP issues
Brothers 335i 30K 08, some Fuel injector issue, but never left stranded.
Brothers Friends 135i 40k, No HPFP problems to report
My 135i 10 with 10 k miles No HPFP issues.
My Z4 has N54 No HPFP issues.
know of 1 other 335i driver personally, and he also has no HPFP issues.
We are enthusiats who would notice and complain if issues. The internet makes the failures seem more common.
PS all are manual transmission, not sure if its relevent.
Yes many HPFP have failed. But they all don't fail, and those who don't have issues don't complain so the forum distorts the problems scope.
To those who had problems or many problems, you have my sympathy.
I would not change.
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Wiles thanks for the great infos you bring on the subject i think your assessment of facts speak for itself,you are joining my S/A who'd always told me that many people had change good pump for nothing.