LCBlackDep183

I was saying, most places country wide only do a 10% ethanol additive. 1:9 ethanol:gasoline ratio will not significantly lower gas mileage, not enough that it should be very noticeable.

I should be getting around 18-20 mpg with my procharger, but i rarely see above 15mpg...haha

The problem may lie between the seat and the driver.

quack44

Here in Oregon well in my area anyway we have 91 octane supper and we do have the 10% ethanol state wide my driving has been real mellow just back and forth to work all sensors are plugged in and no check engine light on before i put the cai on i was on the gas some times to here the new mufflers and it still got the 150 to 165 now i`m driving like freaking grandma and getting the 130 to 135 what 86 5.0 say`s may hold true,talking to some local buds here in town today they say they experience the same loss of mileage with the cai more o2 more gas i just did not think i would lose this much on mileage.

Slo5oh

oh god thank you, I was hoping someone would.

LCBlackDep183

Show me numbers that prove that 13oz of ethanol per gallon of gas(128oz); ACTUAL research that shows that such small a ratio reduces MPG by a significant amount(+-5%) and ill accept your :Facepalms:...

dudeboy

You can't measure miles per gallon, by recording how many miles you drive on a tank of fuel. That is bogus data. It means that the baseline data was bogus, as well as the CAI data.
Start recording 'Number of miles driven / # of gallons used'
The process is pretty straight forward, takes very little time, and will give you meaningful data which can be used... even though the results will still be somewhat 'noisy'

Also,
What intake did you replace with a CAI?


I'm not saying that your mileage decreased or increased.... I'm saying that the data you are presenting here is useless.

quack44

This results is from 12 gallons of gas used with each tank. The cai was changed out for the stock air box and pipping.

dudeboy

Stock air box is a CAI. Had the silencer been removed?


Is that EXACTLY 12 gallons, or APPROXIMATELY 12 gallons.
If it was exactly, then why report mileage in miles per tank instead of just computing MPG?

Jfsram

Cold weather is about a 10% decrease in mileage. Are your first numbers from warm weather driving?

Maybe you have another problem aside from the CAI install because 150miles per tank is bad mileage regardless of CAI or not.

Tony71502

Your tire pressure isn't low is it?

Low tire pressure will rape your gas mileage, but hopefully you would have caught on to that if it were the case.

Hamutoff

I thought that Ford had calibrated the electronics to work together... the stock air tract, Mass Airflow Sensor and computer are all assumed to be working together and provide known #’s: flow, restriction etc... IMO if you change the system from stock, tuning could be required to optimize the new configuration...

This variance mentioned could be the reason that some manufacturers for example, offer different MAF for cold air intakes versus stock intake tract... corrected calibrations to get closer to optimum whether it be best power or best mpg possible given the combination...