[ROVERNET - UK] 4.6 SD1
slatskars at comcast.net
Thu Oct 26 03:22:23 BST 2006
I think that I will stick with simple SU's, thank you! Getting too old to
learn too many new tricks.
----- Original Message -----
From: "Kent Kinard" <kkinard at wcc.net>
To: <rovernet at lyris.ccdata.com>
Sent: Wednesday, October 25, 2006 1:36 PM
Subject: Re: [ROVERNET - UK] 4.6 SD1
> On Wed, 25 Oct 2006 17:59:56 +0000
> "steve bridge" <slbridge at hotmail.com> wrote:
>> Hi Kent,
>> What do you mean: ''Vitesse Spec"? Is the 4CU the hotwire or the 3.5
>> EFI (SD1) system?
> Hi Steve,
> I have your airflow meter but I need a shipping address.
> Lucas 4CU systems are all "flapper" air meter systems and were used on
> Federal and Australian SD1's like yours and mine. They were also used on
> Vitesse, VDP EFI SD1's and UK Range Rovers but with the later style plenum
> and velocity stacks and without Lambda sensors. The Vitesse and Range
> Rover 4CU computers will plug into your Federal system and eliminate the
> Lambda sensors (and catalytic converters where state law allows) ;-) The
> Range Rover and Vitesse ECU's differ from each other and the Vitesse is a
> better match for the SD1 vehicle.
> A rising rate fuel pressure regulator ( to counteract high speed lean out)
> and perhaps higher flow injectors would be useful. The Federal type flat
> plenum is really not that bad, particularly with a 3.5 and stock heads.
> The ECU and piston area are the limiting factors for Federal SD1's. Franc
> has been doing Vitesse conversions on the Federal ECU for quite a few
> years. Google "Stunned Buffalo".
> 13CU and 14CU systems were only used on North American Range Rovers for a
> few years. This is a "hot wire" system but the ECU is not tuneable. It
> is easy to upgrage this system with a 14CUX ECU and a minor wiring change.
> The 14CUX is the definitive "hot wire" system. Some came with plug in
> chips and others must have the plug installed. Most Range Rovers from '89
> to '95 and early Discos. The 14CUX can be configured to run with or
> without Lambda Sensors. Various Eproms were used in different vehicles
> and years. You need to have the Eprom configured for your particular
> application, ie. engine size, compression, camshaft, vehicle weight, etc.
> Kent K.
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