bdaly Posted March 9, 2004 Report Share Posted March 9, 2004 Mine is stock and I am showing an average of 14.5 and have seen up to 15.4 when not using it for little errands < 5 miles. I have not taken a road trip yet but am anxious to see what she will do. If I am towing my boat to the lake it drops my average down to 14.0 I am around 14.1, heads, headers, exhaust, intake, programming, cam and shopman bowtie (that is worth at leasat ten horsepower all by itself). I towed my boat twice and dropped to less than 10 on 100 mile trip. Believe it or not the Suburban gets less than 9 towing the boat so 10 is good. Link to comment Share on other sites More sharing options...
cares Posted March 9, 2004 Report Share Posted March 9, 2004 I put on 976 miles city driving and averaged 12.9... I didn't think that was to bad. Mods next week so we'll see if it helps. Link to comment Share on other sites More sharing options...
evandostert Posted March 9, 2004 Author Report Share Posted March 9, 2004 It must be my heavy foot. but still i have never seen over 12mpg. Not even on the highway. I must admit i cruise around 90mph and have been know to pass cars at over 100mph. Link to comment Share on other sites More sharing options...
Wicked_SS Posted March 9, 2004 Report Share Posted March 9, 2004 It must be my heavy foot. but still i have never seen over 12mpg. Not even on the highway. I must admit i cruise around 90mph and have been know to pass cars at over 100mph. i dont think ive ever seen over 12, but then again i live in the middle of downtown los angeles so that probably has a lot to do with it. traffic is hell here, and i tend to drive a TAD bit on the fast side. Link to comment Share on other sites More sharing options...
MustBBrent Posted March 9, 2004 Report Share Posted March 9, 2004 I must have a real heavy foot then, 12.4. could it be that whistling thingy that gets driven by those belts in the front? ;) Link to comment Share on other sites More sharing options...
chiel Posted March 9, 2004 Report Share Posted March 9, 2004 11.1 mpg it was even worse but a trip to france 1500miles brougt it back a little. i now have 6000 mile's on it. Lost my licence for a week with speeding, after this experience mpg went also up. Link to comment Share on other sites More sharing options...
bling cowling Posted March 10, 2004 Report Share Posted March 10, 2004 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10.9 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thats it , not towing , 1/2 on eway, 1/2 in the city crappy 10.9 ???????? 4700 miles , 10.9 mpg = almost a thousand bucks in gas and octane booster Link to comment Share on other sites More sharing options...
jeffnjill Posted March 10, 2004 Report Share Posted March 10, 2004 I hate to say this to ya, but I've been getting around 15 with 91 octane over a variety of roads. Maybe you would be happier with a Toyota. Link to comment Share on other sites More sharing options...
BigTex Posted March 10, 2004 Report Share Posted March 10, 2004 I just made a 300 mile trip to San Antonio from Dallas. Mostly highway, but I did sit for 30 minutes in Austin stop-n-go traffic. 16.9 avg mpg. I'm logging the miles as well so I'll double check the displays results. Also, you will get better performance and mileage if you run non-oxygenated or winter blend gas. If I drive out to the country and fill up, my truck feels better, and I notice I get better economy. Most cities require stations to run the environmentally friendly gas, which also bumps up the price per gallon. Link to comment Share on other sites More sharing options...
ssblackss Posted March 10, 2004 Report Share Posted March 10, 2004 I am seeing 14-14.5mpg on 93 45 minute commute each way magnaflow true duals and running 305-50-20's Link to comment Share on other sites More sharing options...
BigTex Posted March 10, 2004 Report Share Posted March 10, 2004 Just made it back. 16.5 mpg average. 420 miles to between fill ups. This avg included many WOT tests. Link to comment Share on other sites More sharing options...
Viperkiller97 Posted March 11, 2004 Report Share Posted March 11, 2004 How many of you run 87 octane ? Link to comment Share on other sites More sharing options...
BigTex Posted March 11, 2004 Report Share Posted March 11, 2004 Not me. I'm running too much timing for 87. Well, I could do it, but it would ping under WOT runs. What fun is that. Link to comment Share on other sites More sharing options...
m396 #00-011 Posted March 11, 2004 Report Share Posted March 11, 2004 Not me. I'm running too much timing for 87. Well, I could do it, but it would ping under WOT runs. What fun is that. BTW, what kind of timing are you seeing? I'm getting 28-29 without knock. Stock of course Link to comment Share on other sites More sharing options...
KissMySilvSS Posted March 11, 2004 Report Share Posted March 11, 2004 How many of you run 87 octane ? Trying to run atleast 89-91, some times 94, gas prices are getting so crazy here in ny, over 2 bucks for 94 Link to comment Share on other sites More sharing options...
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