TPS & MAP setting on aftermarket EFI system

[Dave Edge]

Hi Bill,

I couldn't agree more, I guess it's just a foot in the
door really. Even badly set and hideously rich, the
engine runs a thousand times better than it did on the
solex, stromberg or weber twin choke. Besides, the
actual ECU cost about £120 which is less than a pair
of new webers.

I had a play with resloping the map column last night
with good results, I have managed to get the engine
slightly rich at all points (previously lean at high
vacuum and way rich at low vacuum) and the speed
column now looks like the VE map that it should,
increasing towards peak torque. Just need to pull all
the values down a bit now and it should work a lot
better. More importantly, I could do with a passenger
capable of playing with the laptop whilst I drive.
It's a bit dodgy driving round central London doing
this on my own!

Cheers
Dave

 --- William Shurvinton <shurvinton at orange.net> wrote:
> Sounds like you'd be better off with a good carb!
> 
> Mind you I've trying to help someone at work with
> their L-jetronic system.
> It's been a while since I did any work on analogue
> computing: instead of
> changing jets, you change resistors.
> 
> Thinking about it, I'm not so sure if it is as
> limited as you think. I need
> to have a ponder.
> 
> Bill
> ----- Original Message -----
> From: Dave Edge <edgedj at yahoo.com>
> To: <diy_efi at diy-efi.org>
> Sent: Tuesday, January 08, 2002 9:39 AM
> Subject: Re: TPS & MAP setting on aftermarket EFI
> system
> 
> 
> Hi Huw,
> 
> The main drawback from my system is that there isn't
> a
> 16x16 grid for speed versus load. There are just
> three
> columns, one for tps, one for map and one for speed.
> So it's not possible to say produce a lean spot at
> 70mph and a light throttle for the motorway
> 
> ----- End of forwarded message from
> owner-diy_efi at diy-efi.org -----
>
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