05stangguy

Hey guys. Just was curious, does the fuel mileage calculator factor in when I am boost? I have no idea how it works, so I was curious if it "senses" (for lack of a better word) when i am boost and, obviously, when I am using more fuel than a "stock" car??? Thanks guys

chris

SpartaPerformance

The fuel mileage calculator work off injector pulse width so yes it should be able to compensate for boost. So I've been told by a Ford tech but I never really was interested to find out for sure.

candymanjl

mine was pretty close when I was all motor and it's been pretty close so far with the Kenne Bell. I was surprised.

yzf29

Mine reads pessimistic- meaning when I hit the trip consol and it says "8.5 GAL USED" and I look at the pump- (and I always fill up to the same level/procedure)- the pump says 7.8 GAL ( or something marginally lower) purchased

FWIW

yzf29

PS- I have a whipple HO

Simon1

Since I've had custom tunes and FI they have been 10-20% off. Currently with the KB and 60# injectors, it's about 10% off. If it says I'm getting 22.1, it's more like 20 mpg.

It has to do with how fuel trims are set up and what not. Erik Brooks said he could fix it. But the other tuners I've spoken with say it's not possible.

I don't care really.

candymanjl

It's nice to have it close but it's not critical to me either.

marcuskeeler

I pay as much attention to the mileage readout as i do to the radio - none LOL

2007CalSpec

Anyone who's boosted should not worry about their MPG because you're freakin fast now! Woohoo!

candymanjl

Ha ha, I only care on a road trip like I'm on now on trips between cities I've got to watch my mpg to make it without a ton of stops for gas. I've been getting about 23-24 going 75 most of the way, not too bad