Better MPG

[purplhaizcraz3]

Originally Posted by SNV

I have an auto trans. So no shifting for me hehe. Just for kicks you should run your tank low and try running higher octane. Let us know if it changes.

Ah I see. I'm almost out of my current tank, so I think I'll fill her up all the way with 87, reset my fuel counter, and see what I get while driving very conservatively. Then I'll fill up entirely on 93, reset again and see if I get any changes. Will let you guys know what I find.

[jleinaweaver]

I think the fuse pull it to make the computer adjust immediately. I think it should change on its own after some time.

I see no difference with or without airaid. I get 16-17 with it, and 16-17 with the stock box (mostly urban driving). I've swapped back and forth after 1500 miles just to test, didn't see any mpg change.

[spoone123]

LOL 2.2 MPG what are you doing with your car man. Constantly flooring it? LOL

[SNV]

Well as I said I just wanted to report my findings. I would like to know if others get the same results.

[scrming]

Originally Posted by spoone123

LOL 2.2 MPG what are you doing with your car man. Constantly flooring it? LOL

LOL!

That the "instant" MPG from the computer during a "spirited" take off...

[mrray13]

Originally Posted by dagolfguy

I have also noticed an improvement in MPG when running premium fuel. I'm not ready to give stats on it yet, just a very unofficial "I think so".

Here's a question:
I've heard people say that you should perform a fuse pull when switching to premium so that the computer goes into learn more right away. I don't quite understand why that would matter and I'm wondering if anyone thinks that would be a good idea or not a good idea.
I made the switch to see if the knock retard would lessen, and then noticed the MPG difference in the DIC quite incidentally.
-Dave

Our cars won't benefit from a fuse pull, we only have one octane map. The SS guys get two maps, and if the car is set on the lower octane map, the fuse pull resets it, so when they dump in high octane, the car learns again.

In our case, just switch, the knock sensors will know the difference.

[faninc]

Get about same with and without airaid, perhaps a 1mpg loss...if any.

[brian ludwig]

just to let you guys know i brought my car new in jan then it snowed the next day i did not drive it for 2 weeks. In the meantime i got a magnaflow cat back and airaid for the car it had 15 miles from the dealer to my house. I installed both and drove it till now. airaid off BIG BIG DIFFERNCE the car was better with it off!! went back to stock box after reading this forum and wow iam sooo happpy!!

[devildoc]

It is so someones your personal results that drive a person to determine whether something works or not

[Arthur 818]

WTF ! people with the SS get better milege than me....i get around 13.1 with my 2LT..probobly to many hard take offs ??

[Mombasa2k3]

on my return trip this weekend i noticed 25.4 average MPG from Des Moines, Iowa to Omaha Nebraska it's about `160 miles with some small hills. Mines a M6 also the other day i gave her a bath and installed some AMSoil so... that could be part of it a new oil change but over the same distance last week i got maybe 23.6 or so same trip before oil change. Engine does feel smoother now with the full Synthetic though Edit: Forgot to mention that i reset the computer when i got onto the interstate cruising speed of 74. Also i run 89 octane usually cuz... it's a good bit cheaper here sometimes by 10 cents or more

[sparaz]

of course 93 octane will give you better gas mileage, higher octane actually burns cleaner and slower in terms of the fume consumption with DI. As for the lower mileage with the LT than the SS, it's quite possible you have a LOT less hwy driving and much more city driving. Hills, traffic lights, stop signs, etc will always kill your gas mileage to the max.

[greenvillepilot]

I run 93 octane and I avg about 23mpg City and 26.4 highway. Once I learned of Sport mode many Des Moines Iowans have been getting left at the line : )