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Old 04-20-2008, 03:29 AM   #11
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The new cat is in!!!!
The car has way more throttle response, torque, and the 0-60mph feels more like 0-90mph!!!!

I will let everyone know if the new cat improves gas mileage!
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Old 04-21-2008, 12:28 AM   #12
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Quote:
Originally Posted by Gumball
I wish I got 22.
stupid right foot. Its all his fault. :P

x2!!!


also, you should check your tire pressure b/c i've heard that can play a role in mileage.
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Old 04-21-2008, 12:32 AM   #13
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Man, I get about 18 over all. 24 on the highway. Yep, it'* all that foots fault. It has a mind of it'* own.
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Old 04-21-2008, 12:34 AM   #14
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During the week for commuting, my cars:

Zilla: 12mpg

SLEeper: 22mpg




On the freeway:

Zilla: 32mpg

SLEeper: 31mpg



No ethanol here until May 1st, then it hits us in small percentages.
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Old 04-22-2008, 11:32 AM   #15
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We are running 10% ethanol in CT all year. No way around it. Its a known fact that ethanol is 30% less efficient.
You folks without ethanol rock. I want to move.
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Old 04-22-2008, 11:48 AM   #16
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On our most recent trip to FL in the GS (with 110K miles)...4 people, enough luggage for 12 people and doing 80-85 the whole way, we got 28.6 MPG according to the DIC.

In the city we get ~25 MPG.
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Old 04-22-2008, 01:58 PM   #17
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Damn you */C folks! I'd kill for 22mpg combined... the Northstar loves gas. :(
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Old 04-22-2008, 04:15 PM   #18
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I get about 18-19 in the city when delivering pizza. Lots of idling. A tuneup (TR55 plugs, Autolite wires, Purolator PCV) didn't change this number at all. Just made the car quicker to accelerate.
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Old 04-22-2008, 08:22 PM   #19
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Quote:
Originally Posted by LeSabre in Buffalo
I get about 18-19 in the city when delivering pizza. Lots of idling. A tuneup (TR55 plugs, Autolite wires, Purolator PCV) didn't change this number at all. Just made the car quicker to accelerate.
Do you guys have Ethanol blended fuel?

We have it at the Marathon at Walmart.... I used it till I noticed a Mileage drop... There is a local station that competes with the walmart gas station so I go there as they don't have the Blended fuel.. I do 21-23 in town..

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Old 04-26-2008, 11:58 AM   #20
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I mainly use Shell or Quicktrip.
I think all stations in the area use 10% ethanol on pumps.

I prefer to use premium.

Since I put the converter on I am getting 24mpg combined. I am hoping the cold air intake and possible a CPU upgrade will help.
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