FMU = Fuel Metering Unit
When it registers boost, it richens up the fuel by increasing the fuel
pressure via the auxiliary inline fuel pump (included with the Powerdyne
Supercharger Kit that he runs...along with myself and quite a few others as
well).
Powerdyne uses Vortech FMU's and you can swap out the plate inside the unit
from a 4:1 to a 16:1. The first number designates the ratio of how many
parts fuel to air.)
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Tim
Sent: Monday, January 29, 2001 9:47 PM
To: dakota-truck@buffnet.net
Subject: DML: PLATE???---attn Bernd
Bernd, what is this plate, that you talk about, and what does it do with
making the truck run lean or rich on a BLOWN engine??
Tim R.
----- Original Message -----
From: "Bernd D. Ratsch" <bernd@texas.net>
To: <dakota-truck@buffnet.net>
Sent: Saturday, January 27, 2001 2:51 PM
Subject: DML: MAP/IAT Boxes out in the field - Preliminary results
>
> Well, here goes:
>
> Bruce Bridges: Has the box - No reports...yet.
>
> Tim Berry: Has the box and installed - Preliminary report...Had to
readjust
> the FMU to an 8:1 plate (from a 12:1...running too rich under boost).
Also
> improved his shift points...don't know if this is an after effect or just
a
> coincidence. Runs much stronger.
>
> William: Has the box and installed - Preliminary report...MSD BTM turned
> back down to 1 (was at 2.5).
> Runs much stronger.
>
> Richard Pyburn: Box has been shipped - Waiting for delivery and
> installation.
>
> Myself: Installed Revision 2.0 of the box (two piece instead of one piece)
> and removed the MAP check valve. 50mm TB now has no problems at all with
> part throttle "stumble" and will be installing the 10:1 plate (removing
the
> 12:1...running a bit rich under boost). Very strong on part throttle
> acceleration now.
>
> The IAT adjustment has been set to a range of 16 - 190 degrees (no need to
> go below 10...there's no change in timing or fuel delivery) and the
> adjustments can all be changed from 1v - 4v.
>
> I'll be posting again in about a week from now with more results on the
box.
> So far...it's looking REALLY promising! :)
>
> - Bernd
>
>
>
>
>
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