Fw: MPG (was Re: [Shotimes] Fuel Pressure Regulator.)

[Justin Schick]

What archives?!? =)

I had non-stop problems with my Ted B. LPM. Eventually ditched it in
favor of getting my 80mm Ford MAF recalibrated. It runs good now, but
recently I caught a thread about different chips (Motorola vs. Intel)
used in X2J PCMs. Supposedly, LPMs only like the Intel chips. Would have
been nice to know that before the multiple re-burns...

I have a spare X2J that I cracked open and verified has the Intel chip.
My original one has the mounting screw thingy stripped out, so it's not
gonna come out easily. Once I have nothing better to do I hope to swap
PCMs and see if my LPM (now set up for a stock MAF, so it should work
with my recalibrated 80mm just fine) is less ping happy.

Justin 
'92 SHO in KC MO, 190k and counting
SHOTimes list info: http://www.shotimes.com/SHO1.html


>>> "Carl Prochilo" <gr8sho@prochilo.myserver.org> 05/13/03 03:32PM
>>>
John,  I've been thinking about putting a topic like this too (gas
mileage).
My car is a 92 with similar mods, the one exception being my MAF is a
77mm
Pro-M with a SS can. I've cleaned the filaments in the MAF using
electrical
contact cleaner and replaced the O2 sensors.  Still my sense is that
with
the chip installed, the computer is dumping more fuel into the engine
than
it should.  As a result I am seeing poor fuel economy and I smell fuel
after
I've driven the car.  The SHO runs great otherwise and pulls like heck
in
the sweet spot.  I've noticed that I can get close to 400 miles on a
tankful
of gas without the chip and barely 300 with the chip.  I've already
sent the
chip back once to re-flash it.
I drive in a very hot climate, South Florida.  Program is for an X2J. 
Ted
has offered to modify the programming again, but I am waiting a little
longer to
complete all the measurements.

The reason I was thinking of posting was to find out from other owners
with
similar setups what type of fuel economy they are seeing, knowing that
this
is going to be variable due to many items, not the least withstanding
is
driving habits.  John, you may not have the luxury of running your car
without a chip due to the MAF, but if that isn't a problem, you can
also
experiment with this to see if it makes a difference.

Carl P.
92 Red

PS.  Please excuse if this has been discussed ad nauseum before.  If
that is
the case, I will go ahead and search the archives.