Better MPGs without tuner?

UnrepentantSinner · Mar 3, 2013

Well, my Edge Juice with Attitude crapped out the other day along with the FICM. It's always had an Edge on it and had religiously gotten 300-325 miles on a tank (ccsb), doesn't matter if it was set on mileage, towing, or Preformance. First trip today without any tuner what so ever, 431 miles so far and about an 1/8 of a tank left. what gives? Been looking at an SCT tuner, but not sure after this. Thoughts?

CCRICE · Mar 3, 2013

Edge is a garbage tuner and I've heard it will fry trannys. My buddy's truck came with one on it and it deleted his PCM/tcm. We ripped the edge out and I pulled him to the dealership down the street to get reflashed. $90 later his truck runs great. I know this isn't on topic for your question but just food for thought. I've got Gearhead tunes and I get about 325 out of a tank.

yeehaw · Mar 3, 2013

the edge just makes the truck think it's at full throttle at about half throttle from what i understand

OBS F350 · Mar 3, 2013

Is this in town? My truck with 190/75's and no tune got 400 miles to half a tank on the highway last night coming back to town from Wisconsin. Cruise set at 75 most the way. I'm assuming you now have a new FICM installed? Your old one being on it's way out may have had something to do with it getting crap mileage. That's just a guess though.

CCRICE · Mar 3, 2013

Almost all my driving is in town, last long trip I think I pulled 19-21 mpgs rolling 70-75.

UnrepentantSinner · Mar 3, 2013

It was highway, I was wondering if the FICM might have had something to do with it. Or the crap Edge.

CCRICE · Mar 3, 2013

I'd say a combination of both caused it.

Mdub707 · Mar 4, 2013

A bad FICM will certainly cause poor mileage, that would be my guess. Even though the Edge isn't the tuner of choice for these, I still can't see it killing your mileage like that. You would likely find the mileage to stay the same or possibly increase a touch with a good custom tuned SCT.

Karls03 · Mar 6, 2013

Having run Brand E garbage and SCT, I'm inclined to agree with Mike.

My first post Brand E SCT tune was IDP's Aggressive street, it felt like the "Hot Unlock" (who thought up those stoopid names?). I loaded up Extreme Race, WHAT A BEAST compared to Brand E "tuning". While mpg stayed about the same, SCT shaved 6 tenths off of my 1/4 mile ET.