[Diy_efi] Geo Storm ECU revisited

[Bobby Riggs]

Aircooled VW's.  The book Turbomania shows the
ECU wiring diagram and how they 'cheated' by
using pots on the MAP and TPS.  Its a well known
'secret' on the shoptalkforums.com that this is a
warmed over geo ECU that CBPerformance sells with
their kits.  TurboCity uses a 'corvette' ECM that
looks like a 727, reprogrammed for turbo 4 cyl
use.


True I have only SEEN it used on turbo cars,
however I have heard of a "competition EFI" kit
that is NA from CB. check out their website.
-Bobby

--- justin ivan <vlkslvr at hotmail.com> wrote:
> 
> Where have you ever seen this ecu used non
> turbo VW cars??? Are youn 
> referring to watercooled VW engines? I'm pretty
> well versed in VW's and have 
> never seen this used. Certainly doens't mean it
> isn't just looking for more 
> information
> Justin I
> 
> >From: Bobby Riggs <bobbyriggs at yahoo.com>
> >Reply-To: diy_efi at diy-efi.org
> >To: diy_efi at diy-efi.org
> >Subject: [Diy_efi] Geo Storm ECU revisited
> >Date: Wed, 12 Jun 2002 09:46:02 -0700 (PDT)
> >
> >Good morning,
> >
> >
> >    I have searched high and low and can find
> >LITTLE info about these ECU's.  I know there
> was
> >a guy with a Aircraft project using one, and
> >someone on this list wanting to use one.  I
> now
> >have 2 of them, one '90 Storm 12-Valve (4cyl,
> >SOHC?), and a '92 same engine.  I know they do
> >not have a traditional EPROM  (27C)  instead
> they
> >use large square (QFP?) packages.  I would
> like
> >help programming this or building a interface
> for
> >my programmer to hook up to.
> >
> >  Most companies that use this ECU (for Turbo
> VW
> >use) simply put a pot on the MAP sensor input,
> >and on the TPS and label it LOW and HI. Some
> have
> >4 knobs but, I'm not sure where they tie in
> at.
> >Would this be enough for tuning a NA 2.0L Type
> 4
> >VW  engine?  I would like to turbo it soom as
> >funding allows, can I just stick a 2 bar MAP
> on
> >it, or does it need programming also?  Thanks
> for
> >any help you guys can provide!!
> >-Bobby
> >
> >
>
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