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  #1  
Old 08-28-2015, 11:03 AM
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100 mile MPG challenge

I95 South heading towards Baltimore. And the second pic shows MPG since oil change, new cat, and tune from GDE.

Happy motoring!

uploadfromtaptalk1440774012239.jpg
uploadfromtaptalk1440774075090.jpg

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  #2  
Old 08-28-2015, 02:04 PM
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Re: 100 mile MPG challenge

the top pic has 39.5 MPG and the bottom has 31.8 MPG. so 39.5 is after the tune? impressive
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Old 08-28-2015, 02:15 PM
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Re: 100 mile MPG challenge

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Originally Posted by Timo13 View Post
the top pic has 39.5 MPG and the bottom has 31.8 MPG. so 39.5 is after the tune? impressive
I just got to Northern VA. Both pics are with tune. The top was 100 miles on the highway today after filling up. The lower is total miles since last oil change and shortly after I swapped ECU.

Here's the 300 mile report!

uploadfromtaptalk1440785637250.jpg
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Old 08-28-2015, 04:44 PM
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Thanks for mentioning that you are using the tune. The GDE tune, Bluespark, Banks Bullet, etc, will all result in falsely high fuel economy readings.

Did you happen to do a manual calculation at the pump?
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Old 08-28-2015, 04:45 PM
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Re: 100 mile MPG challenge

Not yet. But in the past I have and never had an optimistic reading before and after tune. I usually measure per tank.
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Old 08-28-2015, 05:25 PM
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Re: 100 mile MPG challenge

uploadfromtaptalk1440796928390.jpguploadfromtaptalk1440797089691.jpg
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Old 08-28-2015, 05:30 PM
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Re: 100 mile MPG challenge

Last 13 miles were all traffic stop and go. Hand calc is 35.98.
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Old 08-28-2015, 05:48 PM
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Re: 100 mile MPG challenge

Quote:
Originally Posted by Roadkill View Post
Thanks for mentioning that you are using the tune. The GDE tune, Bluespark, Banks Bullet, etc, will all result in falsely high fuel economy readings.

Did you happen to do a manual calculation at the pump?
The GDE shouldn't.
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Old 08-28-2015, 08:07 PM
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Quote:
Originally Posted by 2012 Summit View Post
The GDE shouldn't.
Owners of the GDE tune are reporting optimistic fuel economy readings from EVIC that exceed manually calculated fuel economy.

YMMV.
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Old 08-28-2015, 08:09 PM
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Re: 100 mile MPG challenge

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Originally Posted by Roadkill View Post
Owners of the GDE tune are reporting optimistic fuel economy readings from EVIC that exceed manually calculated fuel economy.

YMMV.
My photo above shows the EVIC is off by 1 MPG.
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Old 08-28-2015, 08:12 PM
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Quote:
Originally Posted by stician View Post
My photo above shows the EVIC is off by 1 MPG.
Well, there you go. Sorry I overlooked your pics before when I was scrolling.
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Old 08-28-2015, 10:34 PM
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Re: 100 mile MPG challenge

Quote:
Originally Posted by Roadkill View Post
Well, there you go. Sorry I overlooked your pics before when I was scrolling.
I was just pointing it out so hopefully you didn't mind. I notice the motor gets more efficient the longer the trip. It didn't start at 36-38 mpg. It walked up from 31 mpg. And the opposite is true in city driving but nowadays it never goes below 25 mpg when I romp on it. I like the extra 60 LB ft tq.
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