Hey guys okay... I know the topic of 09 Lancer Exhausts have been out for a while now but unlike others despite sound im looking for the best exhaust according to THE MOST GAIN IN HP AND TORQUE more than sound so if you guys got any suggestions it would be awesome because i really want to up the performance first more than the actual sound of the exhaust lol. So far i was thinking the magnaflow catback exhaust it seems to have the most GAIN but if you guys know otherwise then it would be awesome.

 

will not notice a difference between them. gains will be minimal either way.

But, I guess the magnaflow catback or the injen header back would be the two best performers.

 

Does RRMs 08+ magnaflow cat-back exhaust fit in my 2009 2.4L GTS? Or should i get the magnaflow Axle Back? I like the catback cuz it comes in a 2.25 piping, is the 2.4L 09 Gts stock piping 2.25? Plz help this newbie out, thanx