whats ur avg mpg with test pipes mine went down to 12.5 how bad is that?

 

i dunno but i average about 21-22 city and highway driving, bout 29-30 highway

 

Can't speak to "test pipes", but I am averaging about 18 mpg in the city with my mods.

 

All depends on what kind of city driving you are doing. If its stop and go you MPG is going to suck. In Miami I get 10 to 13. On the highway is a totally different story. Highway I get 24 to 29. But there are many more variables that dictate you MPG(ie mods, driving style, traffic, to name a few) My MPG is based on my mods in my sig.