VATS Bypass

[Bruce Plecan]

-----Original Message-----
From: Andrew F. Gunnesch <afgun at mongoose.dearborn.sgi.com>
Subject: Re: VATS Bypass


>OK, can you help me disable the EGR code in my '165 ECM then?
>Where do I start?

Cheap place to start is with reading Programming 101+808,
to do the EGR disable is burning chips, so hardware/software
+money is involved.
  The hardware/software is a prom burning/editing package,
prom eraser, spare prom (memcal), plus a few bits pieces..
  Then the easiest way I know if finding out what temp it enables,
and find that in the code, and just raise it to like 255d.
  That last sentence is many hours of work.  Maybe someone here
has that address, and would like to share it, but, then you need to know the
BBC that it's good for since there are like 12 different
v-8 programs for a v-8 165.
  I also, seriously think about using the latest prom for that application,
if f/y body then use a 89 and disable the 9th injector.  Or go with
whatever someone is willing to share with you.  If you are serious,
I might have a few notes on the AUJM BBC floating around.
Bruce
>
>Thanks,
>--andrew
>> Subject: Re: VATS Bypass
>> From: Andrew F. Gunnesch
>> Subject: Re: VATS Bypass
>> >Bruce, what about his concerns about burning up his engine?
>> "I think" he was partly talking in jest.  But, it's always preferred to
have
>> things right, rather than cobbed.  No offense meant, just if your using
>> a gm ecm it's best to play their game.  IE, if EGR called for, either
>> disable the call or it's reporting.
>> >I'm running the 'vette heads without headers currently, so I'm not
>running
>> EGR either (interestingly, I don't get a code set).
>> With my 747, and 6956's they would always catch it, er set a code.
>> >Am I in danger of damaging my engine?
>> The best solution is disabling it, meaning that neither the timing/fuel
>> corrections are applied.  If you tune well, I doubt trouble, but that is
a
>> game call for skill levels.
 Bruce Plecan wrote:
>> >> Subject: Re: VATS Bypass
>> >> From: Mike Pilkenton <mpilkent at ptw.com>
>> >> Subject: Re: VATS Bypass
>> >> >That was me!  I have a 92 3.1L v6 Camaro motor that I want to
eliminate
>> the
>> >> >VATS as well as the EGR system due to a custom exhaust I have to
>> fabricate.
>> >> >I was told that I must richen up the A/F mixture if I run without the
>> EGR
>> >> or
>> >> >I will burn up the pistons/rings eventually.  Anyone heard of this?
> >> If there is no way to keep the egr intact, then you'll have to turn off
>> >> it's diagnostics, or trick the ecm into thinking it's there.  Might
need
>> to
>> >> use like a 4066 running off the egr apply solenoid signal to trigger
>> >> a voltage divider on the MAP signal.  Assuming this is a MAP system.
>> >> Bruce
>Mike Pilkenton
 >> >Subject: VATS Bypass
>> >> >>Someone needed a 55 circuit for a VATS bypass, please e-mail
>> >> >>me,