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Discussion Starter · #1 ·
I believe the B58TU unit is the same as the B48 HPFP unit the F40 M135i/128ti comes with.

There's not that much info around on the noise these things make, my F40 128ti has this plastic cover over it but there's still a loud ticking. Do the people running these on B58 engines also have them really loud ticking on acceleration and if so has anyone found a way to solve the horrible ticking noise?

Attached is a cover but not sure if this is an attempt from BMW to reduce the noise or a generic cover. It neatly slides over the unit.
 

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Discussion Starter · #3 ·
no ive never managed to capture it, ill try this evening.

When accelerating say between 2.5-4k with the drivers window down, normally alongside a wall/building/hedge its just a very fast ticking. Like a tappet sound
 

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