holy hell, 25MPG!!

[olymaster]

i just drove 333 miles on 15 gallons
at 22mph with my setup im impressed

 

[notchback]

i didn't read all these...but have the speedos been fixed yet?

it's going to register about 10-15% more miles than actually driven....and give a bad reading. showing waaay better gas mileage.

25 mpg sounds 2 good to be tru

 

[Michael Yount]

The difference between 2.73's and 3.73's is much more than 10-15%. You needn't guess at it - it's something you can easily calculate if you know the gear ratios. With the change, the car only travels 2.73/3.73=.73 -- 73% as far for each rotation of the ring gear. That throws the speedo off by 27% - it's going to register 27% more miles than actually driven - and 25.1 mpg becomes about 18 mpg - same % adjustment.

My last around-town tank was 200.5 miles on 8.7 gallons; I'll let you do the math. And my speedo/odo is VERY accurate -- on the Interstate the odo shows 49.9 miles for 50 miles measured by the mile markers.

 

[_jb_]

I got about 18 on my last fillup, mostly highway at 80-90 MPH. Plus a hard run or two.
Can't wait to get my T/A next spring though...27 MPG! WOOOT!