[Diy_efi] GM EFI on Aircooled 2L engine

[Bobby Riggs]

Have you got the '749 bin to work in a '730?  I
was reading some old post about this...  I have
been tinkering around with Programmer writing a
'custom' bin based on what a typical 2L (VW)
motor consumes and vaccume signals it will give. 
Based off the AZTY.BIN file.  Do you think when
I'm done I should burn a 27c256 (120ns or faster)
and just give it a shot?  I can get ECU's in my
area for about $40 and can NEVER find '749s.  I
seen a Turbo sunbird ONCE, in all the yards
(about 6-8), it was completely stripped..  I
don't want to buy one off the 'net.

2) I wasn't really planning on deleting the VSS
just DISABLING it, as in the Malf code it would
give if I never had it :) could I just keep
disabling Malf codes until the SES light goes
away, or fix the problem, depending on what it
was?   I would either build a eprom emulator, or
a Kalmaker type device and just keep plugging
away until it was 'right'.

Basically has anyone modified these enough to get
them to run on NON engine specific vehicles?
(conversion perversions :)  I'm not a fan of
dumping a waterpumper in the back even though it
would be actually WAAAAY easier.  Thanks for your
help guys!
-Bobby
'71 Fastback, '73 squareback
'73 superbeetle, 2 '74 supers
'73 Westy camper 2L  and that just the german
cars we have around :)

--- Bruce <nacelp at bright.net> wrote:
> 
> 1.   For a T/C application, you'll be better
> off using a calibration
> originally designed to be used in a T/C
> application.  ie, that will give you
> a wastegate bit of code.   Hint, 1227749,
> www.syty.org .
> 2.   If you want to go thru the code and delete
> and rewrite the code to
> ignore the VSS then fine, but be advised that
> will/ may take several months
> of work.
> 
> 3.   With EFI there is Correct or Wrong.   You
> can mismatch, and graft all
> kinds of stuff to work, but if your doing to
> settle for that, never expect
> to get the best out of the system.   GM has
> spent oddles of money getting
> their systems right.   Just because some vendor
> does something doesn't mean
> what they're doing is even close to being the
> correct way to do something.
> 
> 4.   What are you crazy? <g>
> Bruce
> 
> 
> 
> ----- Original Message -----
> From: "Bobby Riggs" <bobbyriggs at yahoo.com>
> Subject: [Diy_efi] GM EFI on Aircooled 2L
> engine
> > I am new to this list but have been reading
> for
> > months (years??) and appreciate the vast
> ammounts
> > of info that can be gained from this place!
> > To my question:  I have posted this in the GM
> ECU
> > mailing list and just about got chased off!
> :)
> > Comments like "Are you crazy?!? A 2L Turbo in
> a
> > Bug" are not that helpfull, but are
> INSPIRING! :)
> > My goal: Fit a GM 1227730 ECU to a VW 2L Type
> 4
> > engine (same as 914) using a T03-T4 sized
> turbo.
> > I have the '730 from a '89 Z24 Cavalier Code
> AKDM
> > (not in incoming directy, will be once I read
> the
> > PROM), a IMI EPROM-1 Eprom programmer,
> complete
> > wiring harness (from the same car), and a
> Ford TB
> > (new) from a 2.5L engine.
> > I would like to either make a VSS work on
> this
> > car, or Disable it.  Before you tell me NOT
> to
> > disable, hear me out; I DO NOT need TCC, EGR,
> or
> > anything else for that matter.  There are 2
> > companies I know of called Turbo City, and
> > CBPerformace that build 'Turbo Kit's that use
> a
> > GM ECU, and don't use the VSS.  I can disable
> > Malf codes, and remap it for this engine. 
> Has
> > anyone actually disabled it (Trail blazers of
> the
> > EFI world!!)??  I am building a ECM test
> bench as
> > we speak.  I plan to 'dyno tune' the motor
> using
> > an old tranny and pretty much a 'load device'
> of
> > some type (can we say Jam a 2X4 in there :)
> As
> > you can see, this will be a LOW bugget setup.
> > mostly to show it can be done, and give
> solutions
> > to fellow VW fans.  Thank you for any help
> you
> > can provide! I will share and findings I have
> if
> > anyone is interested...
> > -Bobby
> 
> 
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