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Hi Guys,
yesterday I was diagnosed for my 320i f30 with the AT8 heat exchanger leaking coolant, because a plastic part of it cracked. Only the OEM part is available and the whole unit has to be replaced, which sucks really.
I am curious if the tune could be the reason for it? Could the coolant overheat due to the water pump being inefficient? My mechanic said that it is a very rare issue and implied that it cracked possibly due to temperature differential and right now in Poland it is around 0 degrees Celcius outside. I just would want to avoid such issues in the future.
Shall I upgrade the water pump to that of 328i, Navardi? Or was it just a bad luck random event? I am FBO with catless downpipe and upgraded FMIC. I think we chatted about my tune dyno curve some time ago.
Thanks for all the help.
Best regards
Wojtek
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