So this is an OEM mfg. I recall that on the past the OEMs have solved issues with BMW parts.
Do you know who is the OE mfg? And what is this optimized impeller, is it the part that fails on OE pumps?
Does anyone know if Bmw changed the impeller design through their 3 iterations of part numbers.
128i Sport 6MT converted to Euro 130i spec, tuned by EVOLVE
In-progress: Evolve tune configuration!!; custom lip, some susp.
"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is Review