I was wondering if you guys thought it would help my city fuel economy to change the aftermarket pipes that come of my headers back to stock pipes (look at picture)
I would usually think stock would be better for MPG but since these aftermarket pipes are probably more light weight and probably easier to push the exhaust out since its all straight pipe I wasn't sure... Also, with these new pipes, there is no o2 sensor hooked up so that concerned me too.
I was also wondering if the aftermarket headers I have would be more fuel efficient that the stock ones were.
Thanks!
