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Old 02-22-2004, 11:02 PM   #1
BlueRex28
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Join Date: Mar 2003
Location: North Jersey
Vehicle:
2002 WRX
WRB

Question Cobb Stage 1 + Blitz with silencer

I just took a road trip to VT this past weekend and my gas milage seemed extremely high! I got 145 miles on a 1/4 tank all highway driving - at that rate, I would hit just under 600 miles for a tank. I noticed the increase after putting the silencer in my Blitz exhaust - I have only used it once or twice since getting my cobb stage 1 and I never noticed a differance in MPG's when i used it before. This has me worried that I might be running way lean or something that could hurt my engine (unfortunately I don't have an EGT gauge, only boost) Power seemed normal, but its hard to tell for sure. Do you guys think I have something to worry about? Has anyone had any similar experiences?

My only mods are the blitz catback, stage 1 cobb, BOV, and STI hood scoop.

Temps were in the 30's and it was raining/snowing off and on, if that makes a differance...
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Old 02-23-2004, 03:36 PM   #2
BlueRex28
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BUMP
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Old 02-23-2004, 04:39 PM   #3
heffergm
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Dude... if you get 600 miles on a tank of gas, let us know. But the chances of it happening are, let's see... ZERO.

600 miles on a tank would equate to something on the order of 40mpg.

Go fill the car up and reset your trip meter. Drive around until the tank is near empty. Fill the car up. Divide the number of gallons you put into the tank into the mileage on your trip meter. You'll be somewhere in the neighborhood of 17-28mpg.

If you come back with a number that falls way outside that range, let us know.
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Old 02-23-2004, 05:04 PM   #4
bluestone
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the upper half of the gas gauge ALWAYS falls a lot slower than the lower half.

edit: assuming consistent driving pattern
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Old 02-24-2004, 12:50 PM   #5
BlueRex28
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It works out to be about 37 miles to the gallon. I know that the first half of the tank usually goes slower then the rest but i used to get about 100 miles for the first quarter and now i'm getting 150.
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