I just picked up a Del Sol EG2 with a d15Z1 Vtec-e swap (Came from a Civic Vx). I will be using it as my as my new daily driver.
I will be keeping it na and looking to save gas as much as possible.
*My question is? Will I save more gas or get better MPG with a stock muffer and piping or an aftermarket and wider piping?
Currently that motor gets roughly 45-48mpg City
52-55mpg Highway
Any advise or help will be great........thanks