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

[Carl Prochilo]

Justin,  Can you elaborate on this Intel vs Motorola thing?  For instance,
if running the Motorola processor, what issues would be seen using the LPM?
Like I said, in my case the only real issue I see is with fuel consumption.
What's whacky about this is that Ted explained to me on more than one
occasion that the chip has an affect on the fuel curve only at WOT.  At part
throttle the factory programming takes precedence.
I guess at some point soon, probably over the summer, I'm gonna get the car
on a dyno and do runs with and without the LPM to see what the measurable
difference is.  If anyone has any data that they feel like sharing, I'd sure
appreciate seeing it if it specifically addresses measurements that use the
LPM as the variable.

Carl P.
92 Red

PS.  I have you beat on miles as I'm about to turn over 200K.

----- Original Message ----- 
From: "Justin Schick" <jschick@aafp.org>
To: <shotimes@autox.team.net>
Sent: Tuesday, May 13, 2003 4:48 PM
Subject: Fw: MPG (was Re: [Shotimes] Fuel Pressure Regulator.)


> 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.
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