[s-cars] Fuel Pump Out!!

[Dave Forgie]

The pump is German made.  The issue is not noise. Its whether the VDO or a
Pierburg can provide the required flow and pressure for my RS2 set-up.   With
28 psi boost (aka "370") software and a 4 Bar FPR, you need 58+28 = 86 psi
pressure (and the required flow).  We were only getting 83 psi under tests
with the VDO.  I have seen some graphs that showed the Bosch pumps to continue
to flow more fuel than many other brands at higher pressures.  We'll see. /
Dave F.

"Craig D. Niederst" wrote:

> When the fuel pump failed on my '92 100S, the OEM one I pulled was a Bosch
> (German made). The replacement was also Bosch (Czech made), and was very
> noisy from the minute it was installed. I returned it, and got a VDO
> replacement (German made), and all has been well ever since. If your
> replacement Bosch pump is German made, you're probably OK. If its Czech
> made, you may have a problem.
>
> Craig
> '92 100S (117k)
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Dave Forgie
> Sent: Saturday, March 12, 2005 6:16 PM
> To: s-cars
> Subject: [s-cars] Fuel Pump Out!!
>
> Thanks Fred, Bob and Bob:  Once I knew that there are two clips and that
> the pump would come out, after a couple of blind tries (there's only
> room for one arm (left) and no flashlight at the same time), I felt the
> pump pop up (Yay!).
>
> Pull it out and good news, it is a VDO.  If it was a Bosch then I would
> not necessarily be improving anything.  I am hoping the new Bosch pump
> will be stronger at higher boost pressures and my pinging (at WOT) will
> go away.  If not, there are other options (including new - but less
> agressive - RS2 software).
>
> Dave F.
>
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