|Fix problem #1, problem #2 gets a promotion.
After putting the new 5 series pump in, so much fuel was coming into the
fuel filter in front of the Kugelfisher that it was probably dragging some
old, dead rubber and other crud in the fuel lines into the filter.
The end result was serious starvation at times about 4000
RPM. The car would run great until enough pressure was being generated into
the fuel filter that with the junk in it, there was restriction.
We took a hacksaw to the fuel filter and on the inside of
the new (about 4 months ago) stock filter, it was so black you couldn't make
out what color the original filter material was.