[Shotimes] Re: 76mm MAF with 19# injector calibration?

[Cohiba]

All of C&L's testing is done on a dyno, using stock MAF electronics.
Therfore, the only test data available are the air/fuel curves they got from
their dyno tests.  Lee Bender (owner, C&L) told me they tested the 76mm on
an SHO with both the "Clear" sample tube and the "Yellow" sample tube, and
found that the "clear" sample tube will lean the mixture just slightly,
therefore creating a little bit of additional power, while the "yellow"
sample tube will run just on the rich side of a stock MAF.  According to
C&L, the voltage curve is nearly identical to the stock 86-93 Mustang 5.0
voltage curve, when using mustang sample tubes.  When using a SHO sample
tube, the voltage curve is nearly identical to a stock SHO.  As for flow vs.
pressure drop, I didn't get a set of numbers, but I do know the C&L 76mm
will flow 800 cfm maximum.  As for how it makes the stock sensor think it's
still in the stock housing, the sample tube affects air flow in such a way
that the velocity and mass of air flowing past the hot wire remains the same
as in a stock unit.

Lee seems to know his physics and his MAFs, so you might call it a crap
shoot, but the only variable should be the consistency of the stock MAF
sensor.  I, for one, am very happy with the setup, however I will still do
my own air/fuel tests on the wideband O2 sensor as soon as I can, and post
the results.

Gary
http://users.superford.org/cohiba


----- Original Message -----
From: "Alan Fanning" <Awfanning@earthlink.net>
To: "SHOtimes" <shotimes@autox.team.net>
Sent: Saturday, October 19, 2002 8:19 AM
Subject: [Shotimes] Re: 76mm MAF with 19# injector calibration?


> Did you ask again about test data availability? Particularly flow vs.
> pressure drop data? That's the other part of the equation as to whether
the
> C&L design is attractive relative to Pro-M and other options. If there is
no
> test data available on the units, it's still a crap shoot.
>
>     Alan
>
> > I talked to the owner of C&L today, Lee Bender... very nice,
knowledgable
> > guy.  He told me the 76mm actually has it's own SHO sample tube (called
a
> > "clear" tube), although it's not listed in any catalogs yet.  He says
that
> > it makes more power by slightly leaning out the a/f mixture.  He assured
me
> > they have dyno-tested with wideband O2 to make sure a/f ratios stay
safe.
> > He also said that the mustang 5.0 tube ("Yellow") would make the SHO
just on
> > the rich side of stock, as per their dyno tests.  We talked for about
1/2
> > hour and I asked him lots of questions about his MAFs, and assuming my
dyno
> > tests come back with favorable air/fuel ratios, I will highly recommend
the
> > C&L 76mm to SHO owners.
> >
> > Gary
> > http://users.superford.org/cohiba
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