Gas mileage with Tomei and megan racing y pipe
 

Just got my tomei y pipe back with the megan racing y pipe. I wanted to see what people are getting mpg wise? I'm in an auto and do downshift more so I suspect that could be why its lower. Got it while half way thru a tank of gas and just filled up at 180miles which seems low. Besides that I'm in love with the tomei omg.

Gas mileage should not change that much. On my last Z I had the Tomei Expreme Ti exhaust and Stillen Y pipe and I averaged 19.3 mpg. Any where between 18-20 mpg would be the norm. Every Z gets different mpg as everyone drives different. Your overall mpg will also depend on what fuel you are using. Nissan highly recommends using only top tier gasoline is your Z.