I have noticed a massive decrease in my gas milage lately after the mods i was getting 300+ to a full tank lately I dont get more than 240 if I;m lucky any idea why????

the car has 22k miles

 

I get 15 in town, 20 freeway

 

Huge heavy wheels probably hurt a lot. And the body kit probably increases drag. And maybe a heavier foot because you like the sound of the intake and exhaust.

 

the thing is I have had all this (wheels, kit , exhaust)ever since and just recently started to go down.....

 

Is your air filter very dirty??

 

I've notice a difference too! I think its because we get on the gas more with the MODDS atleast I do

 

The first thing is, are you driving more agressively than before?
Second, what's your tire presure at?
Third, did you change to another type of oil?
and the last thing is, do you drive in more traffic now (stop and go)

Aloha

 

If you lived in California I'd blame the crappy gas which has dropped to 91 octane [premium].

 

Loose the roof rack.....