GXP fuel mileage ??

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11-12-2009, 06:15 PM

94ss06gxp

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GXP fuel mileage ??

how many miles are you guys getting on a full tank of gas????

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11-12-2009, 06:37 PM

JP_GXP

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Best tank ~500, my typical heavy foot around town tank, 250-300.

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11-12-2009, 07:38 PM

JC05GXP

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I get about 300mi to a tank with a heavy foot and mostly city and congested freeway. Best MPG i ever got was 26.7mpg on a trip to Kentucky cruise set at 73mph.

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11-13-2009, 07:43 AM

GXP25

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Quote:

Originally Posted by JP_GXP

Best tank ~500, my typical heavy foot around town tank, 250-300.

How do you manage that?

At best I've managed ~300 all city driving (I work nights so not much stop and go traffic).

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11-13-2009, 09:49 AM

Heslekrants

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I get 18-20mpg city & 28.5-31.5 hwy depending how I drive and the terrain. That's with DOD turned off.

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11-14-2009, 07:25 AM

bigalnash

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well something aint right man i get 15-16 mpg and i have a moderate heavy foot... i had my mass airflow sensor replaced recently u think that would have something to do with it?

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11-14-2009, 07:59 AM

94ss06gxp

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dang guys i think the best i have ever got on a full tank is about 290mi . im about 65% city and 35% highway

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11-14-2009, 10:02 AM

JP_GXP

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Quote:

Originally Posted by GXP25

How do you manage that?

At best I've managed ~300 all city driving (I work nights so not much stop and go traffic).

Mostly highway speeds (60-65), DoD tuned out.

LS1tech act funny over the last couple of days for anyone else?

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11-14-2009, 11:35 AM

GXP25

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Oh okay. But 500 miles is insane!

And yeah, seemed down a lot. Took me forever to post or read anything.

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11-14-2009, 12:25 PM

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94ss06gxp

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yeah it wouldnt load the site for me for the past two days

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11-14-2009, 12:34 PM

#11

Vectus

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Damn, when stock my car was making about 500-550 a tank but i was driving across the country. No stops only for gas, all highway for the most part. Now im lucky to get anything over 220 a tank. i know not a GXP but our numbers shouldnt be that far apart. Yea it would load for me all day yesterday.

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11-14-2009, 01:41 PM

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texasGXP08

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Quote:

Originally Posted by JP_GXP

LS1tech act funny over the last couple of days for anyone else?

Yeah, I just thought it was my shitty iraqi internet service.

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11-14-2009, 01:53 PM

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LS1 Racing

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420 or so every time...Of course, we drive all highway miles.

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11-14-2009, 05:54 PM

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TheMonteMan

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i only get like 280 or so but mostly city driving in nj. tons of stop and go.

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11-15-2009, 11:26 AM

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Heslekrants

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This last tank is the 1st time I've got less than 18mpg in the 13K miles I've owned this car.

I got 17.0mpg but I've been "testing" my 275/40/17 MT drag radials out this tank.

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11-15-2009, 07:08 PM

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CenTexSS

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Quote:

Originally Posted by bigalnash

well something aint right man i get 15-16 mpg and i have a moderate heavy foot... i had my mass airflow sensor replaced recently u think that would have something to do with it?

15-16 with a moderate heavy foot sounds about right. My SS was rated 16/24 from the factory. Sometimes I get 15mpg when I drive hard and stay in the city, I've gotten as high as 30mpg driving out of town.

I actually had 13mpg for a while when I had AFM turned off and stayed in the city.

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11-15-2009, 08:16 PM

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Red03GT

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According to the DIC I've been getting 18-19.5 mpg lately combined. Best I've gotten was 26.x on the way to SoCal before. Worst I've got was 15MPG out of a tank.