VATS Bypass

[Bruce Plecan]

-----Original Message-----
From: Andrew F. Gunnesch <afgun at mongoose.dearborn.sgi.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, December 21, 1998 10:56 AM
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.
>
>On Dec 21, 12:31am, Bruce Plecan wrote:
>> Subject: Re: VATS Bypass
>>
>> -----Original Message-----
>> From: Mike Pilkenton <mpilkent at ptw.com>
>> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>> 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
>> >
>> >-----Original Message-----
>> >From: Bruce Plecan <nacelp at bright.net>
>> >To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
>> >Date: Sunday, December 20, 1998 3:00 PM
>> >Subject: VATS Bypass
>> >
>> >
>> >>Someone needed a 55 circuit for a VATS bypass, please e-mail
>> >>me,
>> >>Bruce     nacelp at bright.net
>> >>
>> >>                Rumor has it Martha Stewart is prepared to formally
>> decline
>> >>                her invitation to X-Mas Dinner at CSH, HQ, for the 2nd
>> year
>> >>                IN A ROW.....   Oh the pain!..
>> >>
>> >
>>-- End of excerpt from Bruce Plecan
>
>