Fasttimez

You are correct, the 2.7 Eco does have a deeper exhaust note than the 3.5 Eco.....why, I have no idea. Me & my buddy both have 2015 Ecoboost, I have the 2.7, he has the 3.5. We both have the exact same MBRP 3" exhaust setup on our trucks. My 2.7 is much deeper sounding than his 3.5, The 2.7 with the right exhaust setup can sound like a small V8 almost, the 3.5 just gets more high pitch, raspy & Honda boy sounding. Here's a video clip of my 2.7 Eco from a cold start to warm up.

FlowmasterMufflers

We have one for the Flowmaster Outlaw system on a 5.0L truck (below). Unfortunately, we don't always have the trucks for a long enough period of time to get all of these videos filmed, but we try to do what we can.

You will get some rumble inside with the American Thunder system, how bad that you think it is will be totally subjective. For comparison purposes, below is an interior clip of the 5.0L with our Outlaw Cat-back system installed. The Outlaw system is more aggressive inside and outside of the truck than the Flowmaster American Thunder kit.


All of the trucks featured in the videos above are completely stock other than the addition of our exhaust systems.

CBF150XLT

Very nice! Thanks for each individual video.

FlowmasterMufflers

No problem. Thanks for checking them out!

Mike@Flowmaster

We have confirmed that Flowmaster’s Force II Cat-back exhaust system for the 2015 Ford F150, part #817727, American Thunder Cat-back exhaust system, part #817725, and Outlaw Cat-back exhaust system, part #817726, will carry on through the 2016 model year for the same engine and sub-model configurations as previously listed.

Scott2373

Awesome! Sounds just like a 1996 Pontiac Grand Am with an exhaust leak!

Shabs

so I guess its just me who thinks they all sound horrible including the 5L? lol Maybe its the video sound?

lumpythetexan

I have a flowmaster catback on my 16 Lariat and it's not the same as a V8 sound, but it's definitely better than stock.

FlowmasterMufflers

We have confirmed that the following Flowmaster systems will carry on through the 2017 model year for the same sub-model configurations as previously listed.

Part #817725 - Flowmaster American Thunder Cat-back exhaust system for the 2015+ Ford F-150

Part #817726 - Flowmaster Outlaw Cat-back exhaust system for the 2015+ Ford F-150

Part #817727 - Flowmaster Force II Cat-back exhaust system for the 2015+ Ford F-150

FlowmasterMufflers

For owners of 2018 Model Year Vehicles, we have good news. We have confirmed that fitment of these Flowmaster systems will carry on through the 2018 model year for the same sub-model configurations as previously listed.

Part #817725 - Flowmaster American Thunder Cat-back exhaust system for the 2015+ Ford F-150

Part #817726 - Flowmaster Outlaw Cat-back exhaust system for the 2015+ Ford F-150

Part #817727 - Flowmaster Force II Cat-back exhaust system for the 2015+ Ford F-150