I average about 15mpg all city.

On the highway I just kick it in 6th gear and my mpg soars to 25mpg.

 

i am getting around 180-200...with about 50/50 city to highway...definitely dropped..oh well...

 

My gas mileage didnt drop any on the highway after i installed my cam and LT's and got it tuned...After i put my 3.42's in my car the best i can get on the highway is about 24-25 MPG..after i installed my cam and LT's i had to drive around for like 2 weeks with no tune..i was only getting about 13mpg in the city...and around 17 on the highway...i took the car to nick williams for all the tuning, after he was done tuning it i get 24mpg on the highway...and high teens in the city depending on how i drive...So man IMO just get the cam you want and get a good tune and your mileage shouldnt really take a drastic drop..

 

MS4 cam and 3500 stall. 15-16 mostly city driving. I knock out about 24 mpg on strictly highway trips. On a good mix I can get around 19-20, but my driving is usually all city or all highway, lol.

 

 

my gas mileage went straight to **** when I did my cam install.......honestly if I could do it all over again I would have left the stock cam in there and spent the money on a nice nitrous setup