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

[Mark Nunnally]

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