Exhaust, I've been looking at catback exhaust for my 15 F150 EcoBoost. Searching forums and YouTube for information and sound clips to help me determine what brand is better performance wise as well as sound quality. There are numerous people on certain forums saying that the EcoBoosts are not gaining any noticeable performance increases from an aftermarket exhaust system. Exhausts for the EcoBoost are basically just a sound and looks upgrade. I figured I would email a few reputable companies that should have some insight on this subject. I emailed MPT, asking if an aftermarket exhaust, with their experiences in our trucks, was worth the $500-$1000? They pretty much said that there is not enough performance gain to warrant the purchase. I also emailed 5 star tuning asking the same question, to see with their tuning and Dyno experiences. They said that you could see 15-20 HP gains in mid range, however they provided no proof on this. To each their own I suppose, I however will be waiting to do any type of exhaust upgrade. When I do decide to upgrade exhaust, I WILL be putting my F150 on the Dyno before installing and after exhaust install for comparison purposes. If anyone has any experience on whether their truck did see a performance gain or any insight would greatly be appreciated.