Installation Time: Afternoon
February 05, 2016
Great, But Not For Everyone
Looking to finish off my build on my naturally aspirated 2011 5.0 manual GT, I opted for JBA longtubes and catted x-pipe after a few conversations with fellow Stangers.
My GT has a BOSS 302 intake with Steeda cold air, BBK throttle body, tune, and of course the JBA long tubers with the catted x-pipe. At the cost of a few horsepower, I stuck with the stock 2.75 in exhaust from the x-pipe to the axlebacks. The stock mufflers were replaced with Roush axlebacks.
A few things to note: the build quality and appearance are fantastic. If you want to keep the stock exhaust from the midpipe to the axlebacks, you will need reducers welded in. It took a muffler shop only 30 minutes to weld mine up and cost me $65. They also noted that as shipped, the x-pipe hung pretty low so with my permission they heated it up and gently bent it upwards some, greatly improving clearance. I advise you have this done also, as a speed bump would have done bad things to the x-pipe as shipped.
The most important note, and one I cannot stress enough, is this: if you love the way your exhaust sounded with the stock h-pipe, do not, I repeat, DO NOT, install this x-pipe. Go with one of the high-flow catted h-pipes instead. This x-pipe changed my car's tone from deep and rumble-y to raspy and rappy. It moves the basic tone several octaves higher.
That being said, I'm IN LOVE with this setup. The longtube/catted x-pipe/Roush axleback combo is loud as HECK on a cold start, but quiets to stock levels once it warms up. Taking it easy around town results in minimal noise, and there is no highway drone. In fact, in 6th gear at 75 mph the exhaust is as quiet as stock.
However, stomp the accelerator and be prepared for an angry, ripping beast of sound to be unleashed. We're talking 12" glasspacks on an old farm truck levels of sound and rap. It's an uncorked, small displacement racecar sound and I love it. It's not for everyone, but I guarantee there won't be many other Mustangs in your area that sound the same. You will also cause some jaws to drop when some fool decides to mess with your quietly cruising Stang and you slap it down a few gears and unleash the beast.