I have an 06 cobalt ss/sc and am planning in going stage 3 with a 2.8 pulley and can't decide on either 60 or 80lb injectors because this is my daily driver and I am a college student. What is everyone actually getting on gas mileage with each of these setups?

 

I'm on 42's with the GM Stage 2 pulley and get 24 city, 30 highway.

 

doesnt really matter a whole lot which injectors you get. except that the larger the injector, the higher the idle. that is assuming you get a good tune.

youre not gonna lose much, unless you have a heavy foot. but if you lean out the power enrichment some from what the stock tune is and command an 11.6-11.8 afr rather than the stock 10.8, youll probably see close to the same mileage as stock.

i havent noticed a drop. but at the same time, i dont count. i just guestimate based on what i travel

and 60s are plenty if youre only planning on running gas