How about anybody with mileage with the Denny T fuel pin?

 

Well I've only gone through a couple tanks on the crew, but first tank was 648.8 miles on 25.2 gallons, so about 25.75 mpg!! Now my speedo is off by about 10%, so subtract that it is probably close to 22-23mpg.

This is on a bone stock 89 CTD, with a leaky lift and VE pump.

 

Just wait til you get those leaks fixed!!!

maninblack2k, the numbers folks have listed probably wouldn't change too much with a fuel pin as the biggest factor in mpg's, apart from the obvious aerodynamics/weight/load, is the right foot... actually, having a Denny T, (or other) fuel pin would have an affect, it'd be hard NOT to put your foot in it every time you launched!

 

In my 91 with mods in sig and driving about 65% highway and 35% city I get 19.5 - 20 mpg consistently. When towing on highway about 16 mpg.

 

Take a look at my sig regarding the DennyT fuel pin. I was one of the early buyers of Dennys fuel pin. The greatest threat to your mileage is the person behind the wheel and the right foot on that driver. I've got more than enough power when I want it - as more than a few have found out and still get great mileage from a truck that can pull half of a city block,

Bob

 

^ What he said. I routinely get 20 - 21 mpg out of mine even though it leaves a light haze whenever it's under load.

 

I have been getting 17-18 around town. I have gotten a best of 26 on the highway running a wmo mix. I cant wait to see what I can get around town with the new converter but i cannot seem to keep my foot out of it. My best since the trans upgrades is 15.

 

Not saying I'm one of those drivers Bob Beauchaine was talking about but ...
Ever since I had my 1st VW Beetle with a Porsche 356 engine in it I've had somewhat of a heavy right foot - but that aside I get 15.5 - 16 city and over 20 hiway ( depending on how much of a hurry I'm in ) .

 

I get about 23-24 mpg with my truck in 5th over with 4:10's.

 

I average about 15-17, my truck is not set up for great mileage.

 

I'm with most others at about 19-23 depending on driving habbits.

 

This happened to me too. I had my tranny rebuilt w. a new convertor, (see sig.) and my mpg went DOWN! I didn't change my driving habits either.

 

My habits changed thats why my milage went down. The truck runs so good I cant seem to keep my foot out of it.

 

I think my truck averages about 18-19 combined. Interstate driving it will get 19 easily, in the city it'll drop to 14 to 16. Driving back roads and keeping speeds around 55-65 I've gotten 21.5 out of her. The biggest factor is whether I can keep my right foot from asserting too much pressure on the smoke pedal (this is doubly hard in town with the yuppies in their Mercedes or the brothers with their stereos turned way too loud.)

Fuel mileage seemed to actually increase slightly with the DennyT pin from what I could tell. But I lost all my data when my hard drive crashed so I can't back that up.

 

I know you said auto, but my 5-spd with 3.54, BHAF, rotated fuel pin, 1/8 bump get 19-20 in town and 24-25 on the highway