Re: FW: Back to the gas question... -Reply

From: A McEntee & M Jass (mjass@magi.com)
Date: Mon Feb 24 1997 - 21:41:39 EST


You guy who have the factory SBEC and the MP SBEC could probably make a cool
modification by having both computers on board, toggling from
factory/learned easy cruisn' fuel efficency, to foot rompin'/learned
acceleration, using a multi-reed relay to switch back and forth.
A couple of 24 conductor relays, some sockets that plug into the SBEC's and
your in bussiness, just be sure to keep current to both engine controllers
at all times.

Imagine decent fuel economy to drive to work, then at a stop shut your
engine flik a switch and WOW :-)

Michael Jass
mjass@magi.com

'87 Dakota 2WD V-6 long box Fastback (soon to be a 93-95 4WD CC *SNIP*
*SNIP* *BANG* *WERRRRRrrrrr* *BUZZZZZZZZT* Fasback)
(I gotta' get get some pictures scanned!)

'62 Cadillac Sedan de Ville

>>An 8-bit microcontroller would use look-up tables to find the appropriate
>>injector duration and timing advance for a given engine speed, O2-sensor
>>input, temp, pressure, and throttle position. There's a default table in
>>ROM - what the SBEC uses when installed, and when the battery's been
>>disconnected for awhile. A modiefied version of this table is written
>>to volatile memory as the SBEC learns your driving habits - if you are
>>happy with a certain acceleration curve, it maximizes the efficiency of
>>the vehicle for that curve. Since most of us can't drive like a bat out
>>of hell every day (no ticket immunity, among other things), the curve
>>the SBEC 'learns' is pretty mild, so 'zapping the PROM' or disconnecting
>>the battery so it loses this memory, will give you back the default
>>"showroom" curve.

 



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