[Shotimes] Re: Nunnaly is probably the sharpest SHO guy on the list

[Ron Porter]

Vaguely.

I also had my own "butt dyno" test. I had all of the BOS pieces installed on
the '89 except for the 80mm and the LPM. Drove the car that way for a month.
I then got the MAF & LPM, and installed them. I was very underwhelmed!! It
was cold outside, and still, it didn't seem to matter. I thought that power
over 6K was better, but not very noticeable. The car later turned 207 on the
dyno, so I know that the setup was correct.

On my most recent '94, the 80mm&LPM and the calibrated 80mm both had some
issues. Dave Garber can relay the story, but he reinstalled the stock 55mm
and the car runs much better (the car has the rest of the BOS pieces).

The Pro-Flow calibrated 77mm and 75mm Bullet or the way to go, with the nod
to the 75mm since it fits the stock airbox, but yeah, it's a mod to do after
you've done all of the other bolt-on stuff and you have spare cash in your
pocket.

Ron Porter

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of Carl Prochilo
Sent: Tuesday, January 04, 2005 9:11 AM
To: shotimes@autox.team.net
Subject: Re: [Shotimes] Re: Nunnaly is probably the sharpest SHO guy on the
list


Mark, I'd have to go back through the archives, but the only person I know
that actually recorded measurements in a controlled environment was Kurt
Metros, and his SHO is about the same as ours.  IIRC, he was having a lot
of troubles with LPM and MAFs.  I thought in all of that work he did, the
55 didn't lose that much compared to the 77.  Not sure it was worth more
than 1 or 2 HP.  Does anyone remember those tests?  Mike K is even more
vocal about the lack of improvement.

Now I'm not about to take my 77 off, but I see there is more consensus
about the MAF upgrade being something to do more down the road after other
areas are addressed.
-- 
Cheers,
Carl Prochilo
92 Ultra Red Crimson

On Mon, January 3, 2005 8:04 pm, Mark Nunnally said:
> 1. I'm not the sharpet guy on the sho list
>
> 2.  The 5.0L mustang, the 3.0L MTX SHO, and the 3.2L ATX SHO all have
> different engine displacements, and injector sizes (and with the 5.0L two
> extra cylinders) yet all use the same MAF curve (in fact the same stock
> MAF
> from the factory).  The MAF is curve doesn't have anything to do with the
> injector size, and trimming an aftermarket MAF to a different sized set of
> injectors is really a hack, old school way to "tune".  (you are basically
> tricking the computer)  The correct way is to simply tell the computer
> what
> size the injectors are, and change the MAF curve to match whatever the MAF
> output is.  You can do this with any of the current "EEC tuner" tools out
> these days.
>
> 3.  This gets pricy, and not really required for just a BOS car.  As Ron
> said, the best bet is to get an MAF (I've had really good results with the
> Pro M 77mm unit) that has a factory curve (same as the stocker, 850 kg/hr
> meter) and run with that.  Ypipe and UDP's will probably give you the best
> bang for the buck.
>
> My j-yard 3.2L with 3.0L intake cams (stock injectors/intake/TB/runners,
> etc) with a Pro M 77 MAF, UDP's, YPipe, and dynocrap catback with the
> stock
> EEC program (no chip) made 216hp/215tq at the wheels on the dyno.  I got
> almost the same mpg as a 3.0L on the hwy, and the car would run 14 flat in
> the 1/4 full weight at just under 100 mph.  All that was the best bang for
> the buck.  Now it's got cams, EEC tuning tools, a datalogger, spend more
> for
> all that than you can for just the original motor and bolt ons!  For just
> a
> relative slight bump in top end hp.  The doller per hp gets mighty stiff
> as
> you keep going.  The above listed set-up I've seen dyno'd on a few SHO's,
> and all of them made over 210 ft/lbs at the tires on the dyno.
>
> mark
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