DIC average MPG vs. actual MPG
Thread Starter
Pro
Joined: Jan 2005
Posts: 667
Likes: 9
From: Melbourne FL
DIC average MPG vs. actual MPG
Ever since my supercharger install the average MPG shown on the DIC does not match the actual gas mileage when you figure it the old fashioned way, distance divided by gallons used. There is a discrepancy of at least 5 MPG between the two.
Is there anything the tuner can do to compensate for this difference by manipulating the computer?
Is there anything the tuner can do to compensate for this difference by manipulating the computer?
Instructor
Joined: Aug 2009
Posts: 132
Likes: 3
From: Surprise, AZ
25% less
I average 25% less than what the DIC says. I asked this same question right after my A&A SC install. All the feed back was it would be a PITA if it could be done. 
I just keep in mind to subtract 25% from what I see on the DIC.
I just keep in mind to subtract 25% from what I see on the DIC.
Speedy
Joined: Mar 2007
Posts: 6,114
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
The computer calculates via injector pulses, your bigger injectors that came with the kit pulse slower to deliver the same fuel as the stockers, this tricks the comp into thinking your using less fuel when in fact you are using more because each pulse delivers a bigger amount of fuel.
