My normal commute is 20 miles each way which is 90% hwy. But, for the past week I've been covering merch routes and doing honey do's for the districts. So I've been more stop and go city. More or less 60% hwy 40% city. Since I bought the car last Saturday, my avg mpg has been 30 before I put the k&n drop in filter on. I did a fill up after I got the k&n and so far I've been at avg 32 mpg with sort of the same stop and go. I've had the lid off pretty much since day one and felt no sluggishness at lights or in traffic. This next fill up I'll put the lid back on and post my findings.
12' Ox White SE Sedan 5spd 1/4 mile-15.8735@90mph
Mods: FSwerks Race Exhaust, K&N Typhoon SRI, MS3 CP-E RMM, Tuned By: Tom, Steeda STS, Eibach Sportlines, Steeda Rear Sway Bar and Anarchy Motive GM Shiftknob