165 MAF computer

[Marteney, Steven J.]

Come now, don't be TOO cruel.  I only deserve some bad mouthing.  :-)  This
car also has the 3.27 posi with a fresh 700R4.  Before I couldn't do drag
runs cause 2-3 was gone past 1/2 throttle.  Now, I almost wish I DIDN'T have
2-3.  Got some work to do.

Have tried Craig's ALDL stuff and, like Diacom in ALDL mode, it doesn't work
on my car.  I get about 3 valid frames out of 1000.  I can see the TPS
voltage going up and down (when I get a valid frame) with the engine not
running of course.  The car has a wiring/noise issue on the ALDL lines, just
haven't tracked it down yet.

Steve

-----Original Message-----
From: Gabe [mailto:gellett at earthlink.net]
Sent: Friday, June 29, 2001 4:40 PM
To: gmecm at diy-efi.org
Subject: Re: 165 MAF computer


You mean you've got a '165 TPI and you're not using Craig Moates' free
monitoring program with built in 1/4 mile calculator!?!?

Shame!

But now you've got me not feeling so bad....  My 83 Fullsize GMC 2wd with
TH400
and 3.08 rear with a stock 100K+ 305 TPI with manifolds and free flowing
dual
exhaust (running ARAP) is turning around 17 seconds (don't remember the
speed)....  Now you've given me a reason to go out and make another run :)

Gabe

"Marteney, Steven J." wrote:

> 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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