[urq] Abt fuel distributor

[Chris Semple]

> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com]On

> >What is so "special" about ABT fuel distributor? Just
> >to satisfy my own curiosity.

> To be honest with you, I don't know for sure, but I can tell
> you that is has
> an Abt placard on it just above the Bosch placard that is
> riveted onto the
> fuel distributor. Abt may have done some internal
> modifications to the F/D. There
> are no part number(s) on the Abt placard/sticker but the
> Bosch placard reads:
> 0 438 100 098. For reference, the Bosch P/N on my UrQuattro
> F/D reads: 0 438
> 100 123. It might be my eyes playing tricks, but the Abt F/D
> that is sitting
> on my desk as I type this, looks beefier than the one I just
> looked at on my
> Ury. Anyone have any concrete info on what Abt did to these cars?
> Jim Furdyn

The 093 dist is an OEM part for a euro spec WR ur-q. Without flow data for
the particular ABT unit, or evidence of machine work/mods, I doubt you could
tell anything from looking at it. Base specs listed below for both units.
You can see why Audi chose the 123 dist for it's USA cars. The Abt/euro WR
unit has the ability to flow more fuel with slightly lower pressures, a good
thing for tuning. Abt wasn't breaking new ground in the USA, just updating
to euro-spec. I'd be curious to hear from our european colleuges what Abt
was offering for *their* cars.

    TYPE       cm3/60sec    bar    liter/h   Lambda
0 438 100 093     272     5.2-5.9    140       no
0 438 100 123     200     5.6-6.3    140      yes

Cheers,
-Chris Semple
Concord NH
'92 S4
   '04 F350 DRW