Chip for Northstar

[Ken Kelly]

Chris,
	If you can figure out the correct ratio, I would pick up
the VSS signal scale it to the wheel frequency, and feed all
the wheel sensor inputs with that signal. It would always
have the right input, and never see wheel slip!! All you
really need to know is how many pulses per revolution the
wheel sensors output.

		Ken

"David A. Cooley" wrote:
> 
> Hi Chris,
> The wheel sensors not being there may be the key...
> There is a "Brake Torque" mode the PCM uses that cuts back timing and fuel
> when it doesn't see wheel (or VSS) input but see's throttle/rpm etc...
> The GM Cal Doc's are the actual calibration documents showing what tables
> etc are where in the chip.
> VERY helpful for modifying code as you can flag it to say that the
> ABS/Traction control isn't there.
> 
> -----Original Message-----
> From: Chris Moore <northstar87 at hotmail.com>
> To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
> Date: Monday, March 29, 1999 8:40 AM
> Subject: Re: Chip for Northstar
> 
> >Hi,
> >   I did hook up the brake module which is the traction control and the
> >abs control computer.  I do not have any wheel inputs though.  How can I
> >get this to work?  Explain more about the GM CAL Docs.  Thanks.
> >
> >Chris Moore
> >
> >
> >>From: "David A. Cooley" <n5xmt at bellsouth.net>
> >>Reply-To: diy_efi at esl.eng.ohio-state.edu
> >>To: diy_efi at esl.eng.ohio-state.edu
> >>Subject: Re: Chip for Northstar
> >>Date: Mon, 29 Mar 1999 07:54:53 -0500
> >>
> >>At 04:06 AM 3/29/99 -0800, you wrote:
> >>>Hi,
> >>>   I have a very unique car.  I have a 1987 Fiero GT with a 1995
> >>>Cadillac Northstar.  It runs great but it will not peel out.  I only
> >>>know of about 5 of these projects in the Nation and they all have this
> >>>problem.  My engine only has 16,000 miles on it. (just for you info).
> >I
> >>>think that it is the Torque Management located in the PROM.  Torque
> >>>Management was to make sure you do not peel out under a heavy load
> >>>situation.  It kills injectors and plays with the timing.  It is all
> >>>explained in the GM manual.  I had Super Chip try to make a chip for
> >me
> >>>and they said that they could take care of the problem.  It still did
> >>>not fix it.  I was wondering if you guys could help me out?  Please
> >let
> >>>me know.  Thank you.
> >>
> >>Chris,
> >>Did you transplant the ABS and Traction control as well?
> >>If not, that may be the problem... The Caddy PCM looks for input from
> >the
> >>ABS and TC modules... If it doesn't see it, and the chip still thinks
> >the
> >>modules are there it will severely torque limit thinking there is a
> >problem
> >>that could cause loss of control.
> >>You need to find someone with the GM Cal Docs that can disable the
> >ABS/TC
> >>parameters.
> >>===========================================================
> >>           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
> >>     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
> >>       I am Pentium of Borg...division is futile...you will be
> >approximated.
> >>===========================================================
> >
> >Get Your Private, Free Email at http://www.hotmail.com
> >