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

[Carl Prochilo]

Kurt,  I just posted on this topic, but my basic understanding of the LPM is
that it modifies the fuel curve specifically at WOT, which is what you were
doing during your highway driving.  So what you observed stands to reason.
I guess some basic logic would say that if one opens up the air intake and
exhaust, and the LPM compensates for the extra air in the engine by
providing more fuel, and hence providing more horsepower, that fuel
consumption will suffer by definition.
What we really need is a switch on the LPM to select which program to use
based on the driving situation.  Alas our low tech LPM does not provide this
capability.

Cheers,
Carl P.
92 Red

----- Original Message ----- 
From: "Kurt Metros" <kurt@elkhart.net>
To: "'Carl Prochilo'" <gr8sho@prochilo.myserver.org>;
<shotimes@autox.team.net>
Sent: Tuesday, May 13, 2003 5:22 PM
Subject: RE: MPG (was Re: [Shotimes] Fuel Pressure Regulator.)


> >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.....
>
> Carl, I'll concur.  My milage has always been horrific.  Granted, I
> drive it like I hate it, but it's really bad. I'll guess 11 in the city
> and low 20's on the highway.  This is with an 80MM Maf and LPM. Also,
> the car is very well maintained and throws no codes.
>
> Dave Kegel and I filled up rolling out of the convention in Tulsa a
> couple of years ago and followed each other back to the Chicago area.
> We averaged 90-100mph without traffic and made spirited WOT runs from 65
> to 110 or so after getting caught behind traffic.  Point being, I needed
> gas way before Dave did and when we refilled I needed another 1.5
> gallons or so than he did to top off the tank.  I don't think the LPM
> should effect highway mileage like that, but unless all 1.5 gallons were
> lost on the spirited WOT runs, I don't know what else to attribute it
> to??
>
> Kurt
> www.kurtmetros.com
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