Got a tuner for $137.00, from Canada, the Predator U7154:







'Bout 2-minutes pass...





Few minutes pass.....




Done!

A:F ratio hasn't ever gone above 14.08:1, after the tune, it went to 15:1 with a short run at WOT.

Will see what the MPG increase is this week, starting tomorrow.

 

Are you saying at WOT it is around 14:1? If so that is incredibly lean. At WOT you should be lower. Cruising 14 or 15 is fine, idle 15 or so is fine, and coasting it will go to 20 because the engine is just an air pump at that point. But WOT I wouldn't want to be above 12:1

 

Mine has been around 14.08 to 1 normal driving, it says "Commanded", there is no
live reading. Lowest was 12:1, highest was 15:1, so, maybe it went to 15:1 when I
let off the gas... It shows a Low and High, low was 12:1, then high was 15:1, but
running, commanded, is 14.08:1

As I said, it's a commanded value, not a live reading. I looked to see if there
was a live reading, there is a field, but it's not highlighted as available in the torque
app. So, I can't get ACTUAL -vs- COMMANDED. I have not checked the available
readings since the tune though. SO, I won't see a 20:1, because the ECU will never
command that ratio.

 

I also tried the 87 and 93 performance tunes. Believe it or not, the 93 didn't have
a reduction in MPG as long as you weren't stomping on the pedal. Both of them
lost MPG when cruising at 80. If Kept it to about 70 and under, they faired pretty
pretty well. Though, I really didn't notice the HP increase with the 87, but I did with
the 93.

I am not going to keep it on 93, because even though the MPG is fine, I am not
paying the price for 93 octane fuel...

Also used the firm transmission shift option, and yeah, THAT'S the way they should be!