So I recently added the top speed exhaust, does anyone have problems with their mpg's? I reset the mpg since I got it and now it's telling me 7.5 mpg. Does it make sense? Not driving like a maniac and its regular NYC driving.

 

I never had that issue when doing any of my exhaust work. I must say that is strange. I would recommend manually tracking your mpg when you fill up next and then reset your ecu either by doing the gas pedal/on-off method or unplugging your negative cable for roughly 30 mins and see if that goes back to normal.

 

I have the topspeed exhaust; in fact I have full bolt-ons now. Mileage never changed.

 

what was the mileage before the mods? need a frame of reference. if you're sitting idling and constant bumper-to-bumper traffic then 7.5 mpg might be the deal.

 

Used to be 14 city driving and after exhaust that happened