ASC-T Delete & fuel mileage

[jmo69]

Has anyone who's done the ASC-T delete noticed a drop in fuel mileage? I did the delete and haven't really changed my driving habits, but my mileage seems to be dropping. I have mostly short trips (to and from work is only 3mi.) and the rest are under 1/2 hr. I've gone from 23-26 mpg to 20-23 mpg, although the OBC shows higher and at cruising speeds it will show nearly 30 mpg. Is the extra airflow doing this or what?

[BMWMPow3r]

I did it, didn't really notice a difference.

After underdrive pulleys, I did notice a difference though.

[LuvMy328is]

Probably foot-to-floor syndrome. Check out my sig, I get 27-29hwy and about 24 mixed loop.
~Phil

[jmo69]

Todays was 22.5 mpg.

[BMWMPow3r]

Todays was 22.5 mpg.

your car obd2, can you pull codes?
maybe an air leak.