hey guys iv been reading on here for about a month and just bought my first cobalt(06 ss/sc). i am going to go stage two and have looked around/searched but not found much about how much mpg i will lose. can some people with stage2 post their mpg along with any other mods

 

Ive got the stage 2 with intake and exhaust, I get 32 normally on the highway cruising at 70mph and about 20 around town with my foot constantly into it. You wont lose much if any, Ive heard people on here say they've gained mpg. good luck with it, welcome to the site, and congrats on the new car.

 

Injen Intake, ZZP Shorty header, 3 inch downpipe, megan cat-back, stage 2, nates 2.9 inch pulley, one step colder plugs.

City: 24-26mpg
Highway: 34-35mpg

 

pretty much exactly the same as stock for me...actually even a little bit better i think haha not by much though

 

well the first 2 weeks with s2 i was getting 17-20mpg cuz i was on the foot a lot i went on a a lil trip which i was getting 30 going 75mph. Now am getting 27.5mpg city.

 

Injen CAI, magnaflow custom exhust, Stage 2

I tend to get about 19mpg thats a combo of freeway flying (80+ mph) and a lot of city driving.

When i go to Sonoma or a long tripe ive gotten up to 36mpg

 

was getting 17mpg on s2,zzp header/downpipe,full exhaust..i barely romped on the car and got 200miles to a full tank..filled her up 3 times a week

 

17 only superss? im getting 22-23 all city now so should be able to still get 20 with s2. thanks for the imput, cant wait

 

stage 2 with aem intake pacesetters armor coated header and magnaflow exhaust i get bout 31mpg doin 75ish on the freeway

 

i guess it all depends on how much of highway and city driving u do..i do alot of city driving and only do high at night,and thats when i race...other than that,its all cruising

 

i have gotten worse mpg after my stage 2. Of course the first two-three tanks I only got about 16-17 mpg lol. But on average I have only been getting like 19-20. However, i live 3 min from school and 3 min from work stopping inbetween each about 7 times and never get above 40mph. I also rarely drive highway so thats the reasoning for the poor mpg. When i do drive highway I get about 33 with cruise set to about 70. Before it was about 1-2 mpg better in the city but about the same on the highway.

 

I believe after a lot of reading, the consensus of the site is: no significant increase or decrease. Most people don't notice.

It would be kool, if you put up a poll asking something like, "After stageII did your mpg increase or decrease?" with the options "Increase, Decrease, No Change, Not Sure" and make it public.

 

I get shity gas milage for some reason mines between 14-18 and i have a built motor pushing around 340hp why is that?

 

I have stage 2, exhaust and intake i get 31 right now avg.

 

I get 26.6 to 27.1 (depending on how much city/highway driving I am doing) My mods are in my sig. I don't know how some people are getting 35+ MPG w/ stage 2. My car was getting just a hair under 30 stock.