stang not saving fuel

[jicsboss]

2001 Mustang GT Aut
Cal ID RVAF1T4
Mods: K&N filter
Diablo Tune


After uploading a custome tune because the car wouldnt shift gears with the original tune, I started using 93 octane from BP, Shell, Sunoco and Citgo and have not seen any improvement on gas savings. The stang is giving an avg of 15 mpg in city, which is the same as when the tune was not installed.
I noticed less power with the custome tune so I increased the ignition time 5 dgs and the shift firmness. But the mpg is still the same.

Any ideas?

thanks,

jc

[kmac1]

2001 Mustang GT Aut
Cal ID RVAF1T4
Mods: K&N filter
Diablo Tune


After uploading a custome tune because the car wouldnt shift gears with the original tune, I started using 93 octane from BP, Shell, Sunoco and Citgo and have not seen any improvement on gas savings. The stang is giving an avg of 15 mpg in city, which is the same as when the tune was not installed.
I noticed less power with the custome tune so I increased the ignition time 5 dgs and the shift firmness. But the mpg is still the same.

Any ideas?

thanks,

jc

jicsboss,

Unless you had your car custom tuned by a tuning dealer the possibilities of gaining fuel mileage are very low. One of the main reasons the car would need a custom tune is the K&N cold air kit as we currently do not have a K&N canned tune for that calid. The cold air kit will alter the Maf signal which is your main input affecting fuel demand. If you have the car tuned to maximum performance and optimum fuel trims you have a much better chance of increasing fuel mileage.

Thanks,
Kevin@DiabloSport

[jicsboss]

Cole from Diablo sport did the custom tune because the car was not shifting at WOT.
The custom tune that cole did for me wasnt suppose to give maximum performance and optimum fuel trims?
So you are saying that by removing the K&N the car will save more gas?
iIf I remove the K&N wha will happen to the performance?


Thanks,


jc

[jicsboss]

Cole from Diablo sport did the custom tune because the car was not shifting at WOT.
The custom tune that cole did for me wasnt suppose to give maximum performance and optimum fuel trims?
So you are saying that by removing the K&N the car will save more gas?
iIf I remove the K&N wha will happen to the performance?


Thanks,


jc