any one have fuel problem? cause my 2006 tsx have a high fuel consumption, no more than 21mpg even though on high way drive(I try to use cruise control) . btw, i did not change any other part of my car but add a 12" subwoofer which not affect fuel too much.

 

i get 24 with 50/50 highway/city but i got 32 when i went to sf...wish i can get that all the time..