cat effect MPG?

[pistolpete837]

how much if any would taking off my cat on my stock 04 effect my MPG? will it lower my egt's

thanks peter

[Echo]

I got an average of 17.0mpg with cat and about 18.2mpg without cat. Yes it will lower the egt's as well.

[CLIPPERS]

Is that mpg average highway driving?

[Echo]

yeah mostly highway.