165 MAF computer

[Marteney, Steven J.]

I'd like to believe horsepucky too but here's what recently happened to me.
I did a full-throttle run, no track just empty run, and a bud watched
Diacom.  The reading never went above 175gps.  I'm in the same boat this S10
guy is in.  Lots of mods "the thing should just fly" but my performance
sucks.  Granted I also suck at tuning which is slowly being corrected.  I've
used the HomeDyno/StreetDyno programs and it says I'm making 266lb-ft of
torque peak.  I then ran those curves into a drag simulator (that I'm
writing myself) and it predicted mid-15 second times.  I work at place on a
back-road that just happens to have two stripes 1/4 mile apart.  Had a
friend time me with a stopwatch (in the car and he weighs 300+lbs) and the
car did 16.2 at about 85+ on the speedo.  Pretty crappy for an 89 TPI
Formula ZZ3 cam, SLP 1 3/4" headers, RandomTech cat, fully balanced,
flat-top pistons, flowmatched injectors, K&N filter.  Never seeing the MAF
reading go above 175gps makes me suspicious.

Steve

-----Original Message-----
From: Scot Sealander [mailto:Sealand at clarityconnect.com]
Sent: Friday, June 29, 2001 3:43 PM
To: gmecm at diy-efi.org
Subject: Re: 165 MAF computer


Programmer wrote:

> The '165 MAF only computer is limited to sensing 175 grams per second,
> maximum power is around 200 HP and that's it. This is the word from one
> of the original guys that made ACCEL's DFI system.True or horsepucky ?
 
Horsepucky.  The MAF code dies at 255 gps, or about 325 HP.  The MAF is
about the same.  The TPI's maxed at about 245 HP from GM as I recall.

Scot Sealander
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