Stage1 MPG experience...check in

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06-02-2009, 07:36 AM

#21

JeramieJJ

Senior Member

Thread Starter

Join Date: 03-11-2009

Location: WI

Posts: 327

Quote:

Originally Posted by 87silver

Around town went from 22.8 before the upgrade to 24.5 after with no load and 2 people in the HHR.
Bottom line:
Hwy + 2.6 gain
City + 1.7 gain

And, unless you reset your mpg calculations, that's averaged on top of your miles already traveled without the turbo.

06-03-2009, 08:57 AM

#22

87silver

Senior Member

Join Date: 11-15-2008

Location: Newburgh, NY

Posts: 1,599

I believe that you are correct. The mileage data was not reset for local driving on the day that the ST1 was installed, so it was a combo of before and after. The longer trip data, however was linear, as the DIC was reset before each trip (1 before and 1 after ST1 install).