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Old 02-16-2008, 05:31 PM   #1
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Default Ordered Intense FWI

Hoping it'* gets here before Friday, as I will be taking the Bonne on a weekend trip. I think I'll be ordering a PCM as well, but will need to call I guess since the '05 Bonneville isn't listed on the website. Will get the 180 T-stat then as well. Has anyone noticed any gas mileage change (good or bad) with the FWI?


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Old 02-16-2008, 05:53 PM   #2
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Dad has one on his 2002 Buick Park Avenue Ultra.
We ran the 2002 and his 2004 Park Ave Ultra right next to each other on the freeway @ 70 and 75 MPH and the 2002 was usually 1 -1.5 MPG higher. The 2004 has the 2002'* gutted airbox with a K&N drop in, so if that were stock the difference would probably have been 2 MPG or more.
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