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when i had the 302 i got about 23-25.

i dont know about the 351, havent went through a tank yet!
 

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Discussion Starter · #4 ·
Wow! I thought these motors got like 12mpg? thats actually pretty dam good!


Will it mess my gas mileage up or help it. i have a GT 40 explorer intake mani and 70mm BBK throttle body and adjustable fuel pressure regulator at 42lbs Idle and a pretty bad exhaust leak on passaenger header? lol


0 && ford racing roller rocker arms.
 

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The ehaust leak can hurt, it gives a false reading to the 02's, which is normally a lean reading, so the ECM adds a tad more fuel.

In general, the more effiecient a car can inhale and Exhale, the better it will be.
 

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I dunno about my whole tank but on my pretty well modded 94 5.0 I get about 22mpg : )
 

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Discussion Starter · #8 ·
wow, these are all good numbers lol. well i haven't really looked into it but my 02 sensors are disconnected under neath car and wires are jus hanging. and if i have the motor idling and im checking my motor out i burns my eyes badly from the exhust leak. leading me to think its running extreamly rich lol.


I get my Cobra R Wheels tommarow and ill connect them and try in fix my exhaust leak.
 

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You need the 02's hooked up. You staying in open loop, and killing you performance. The ECM has no way of adjusting the A/F ratio without them.
 

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Discussion Starter · #11 ·
so, do any of you guys know how many miles to a tank yall get?


I really wanna know but my odometer don't work. i think its a little gear inside. but speed0 works.
 

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I get about 14mpg, which is about 200 miles on a tank, if I really stretch it.
 

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if i baby it i can get a about 18 mpg but usually with mixed and town driving ill get closer to 15
 

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Discussion Starter · #15 ·
I guess their not to bad on gas. And yea i expected everyone to say they got 15MPG or under. but hell 22 and 23 is pretty good for V8.

Thanks guys i was just curious on that.:bigthumbsup
 

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Driving mine pretty hard I get 18-19 around town. I haven't driven this current set up long I am sure I could swing 20 if I wouldn't jump on it at every light.
MIne is pretty cookie cutter modified, Gt 40P Heads, e303, DSS 306, underdrive pulleys, ac delete etc. Dynotuned by Bob Kurgan it lays 256hp and 311lbs of Torque to the tires.
 

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hell getting in the 20s for mpg are great for a V8. My 2006 solstice gets 9 maybe 10 if im lucky and going down hill more
 

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Discussion Starter · #18 ·
yea, no **** ^^^ My Daily Driver is a 2007 Chevy Malibu LT with a 3.5L V6 and it gets 18MPG and 21MPG Highway. so im better off driving my mustang if it has AC lol.
 

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yea, no **** ^^^ My Daily Driver is a 2007 Chevy Malibu LT with a 3.5L V6 and it gets 18MPG and 21MPG Highway. so im better off driving my mustang if it has AC lol.
mine is just a bomb. I got the 2.4l 4 banger in there too. and my other car is a 99 escort zx2 and i pull 39.5 mpg in the city and 50+ on the highway
 

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I've been getting 12mpg:frustrated:at best...at 140miles gauge reads empty...I need a new sending unit. I need to get the car dynoed, haven't since the HCI build, I think it'll help a little with the gas.
 
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