SilverTiger

I lowered my wagon 1.5 and can't seem to get better than 21.5 c/c set at 73mph. My drive is mostly flat with little rollers. How are you gas V8 guys getting over 26mpg?????

cmriv

You drive a wagon with a m113 motor correct?

kajtek1

I wonder if that would be wagon 4M as well.
Consider also that CA fuel has less gasoline in it that fuel in different states.
Had no chance in last years, but before the ethanol fuels, I was recording >10% increase in mpg after fill ups in Arizona (Nevada pumps CA fuels).
That all assuming that by lowering you car your mpg will not increase by 18%
As promised, here is my mpg at 60 mph.
It is 26.3 mpg. Comparing to what cmriv has
- mine is 4M what shaves 1-2 mpg
-mine is wagon what shaves 2-3 mpg
So adjusting would I drive RWD sedan like cmriv has, I should get 30+ mpg easy.
Than he is driving newer 8-cylinder, I am driving older 6-cylinder. I would think they both should deliver the same mpg at freeway cruising, but have no way to verify it.
His engine turns 1400 rpm at test speed, mine 2300 rpm.
Than I might add couple mpg for less energy in CA gasoline.
Anyway I am pretty confident that those sedans should make close to 30 mpg @ 60 mph without lowering, so if cmriv was making much less before lowering, something wrong was with the car.
How much the increase in mpg come from lowering the car, how much from other issues will be very hard to determinate with inconsistent data.
Bottom line, I am not buying that lowering the car will make the economy going over the roof.
Looks like neither buys it SilverTiger

cmriv

I'm trying to figure out how it took me almost 180 minutes to average 61mph and you are doing it 10 miles and 10 minutes into your drive.....

kajtek1

10 minutes was all I could handle at such low speed.
For more comparison - here is my longer range reading.
BTW seems my spark plugs and O2 sensors are original. I am planing to put new plugs soon, so wonder if I will record mpg improvement.

SilverTiger

Yes my wagon is a 4matic plus the 500 V8. I even use the first sport button on my suspension. read and seen that it lowers the car over 70mph.

Still hard to get above 22.5 mpg
speed avg 65mpg
70-80 miles driven
C/control set at 73mph

kajtek1

I am getting 22 mpg with CC at 80 mph, so yours 22.5 @73 mph is on low side but not alarming.
You have newer engine, so I would expect it to do better, but then we have so many variables to compare.
Than maybe in your case lowering the wagon makes for poorer mpg?
Try it lifted for comparison.