Lethal Performance opens up the exhaust on its new GT project with a full system from American Racing Headers
By Steve Turner
Photos courtesy of Lethal Performance
If you have been following the progression of Lethal Performance’s 2015 Mustang GT project car, you know things have gotten serious in a hurry. From basic bolt-ons, right into nitrous, the car is on the fast-track to being fast. As part of that transition, the car has seen numerous bolt-on exhaust upgrades, as the Lethal camp likes to try out the parts it sells.
With the next big move looming—the addition of a Whipple supercharger system—it was time to get serious about opening up the exhaust. While the combination of the Lethal Performance resonator delete and several different cat-back systems certainly helped the cause, there is no substitute for a full exhaust system fronted by free-flowing long-tube headers.
“We’ve been using American Racing Headers on all of our project cars and trucks for many years now so we figured there’s no reason to fix something if it isn’t broken,” Jared Rosen of Lethal Performance said. “Their systems are made right here in the USA by a bunch of great guys that are just as enthusiastic about racing as any other gearhead across the planet. Plain and simple, ARH it is!”
Team Lethal headed over to Power by the Hour in Boynton Beach, Florida, to have the system installed by Jesse Guajardo. He removed the stock and aftermarket gear and bolted up the new American Racing Headers’ system on the Lethal GT without a hitch. The system looks great, and sounds even better.
“Just like any of the other ARH systems we’ve used the fit and finish on their 2015 Mustang kit is exactly what you’d expect from a leader in the aftermarket exhaust industry. They use high-quality T304 stainless steel and have stacked-dime welds wherever a weld is needed,” Jared said. “This was actually the first time we’ve ever used one of their complete systems. Typically we would mate their headers and mid-pipe with a Magnaflow competition exhaust. However Nick Filippides at ARH was persuasive about having us run their complete setup from headers to tips saying the system sounded amazing. So we trusted him with that recommendation.”
Of course, the installation was only part of the process. With the American Racing 2015 Mustang GT 1-7/8×3-inch off-road X exhaust system and Pure Thunder Mufflers (PN ARH-MTC5-15178300FSNC; $2,869) in place, Lethal hit the dyno to document the results.
“What’s not to love about making more power and sounding awesome at the same time,” Jared enthused. “That’s exactly what we got after installing their complete system. I’m definitely impressed and glad that we went this route. Thanks again to our friends at ARH for another job well done!”
We are still catching up on some of the other mods on this car, so stay tuned for more stories. However, the next major mod is the aforementioned Whipple supercharger. It will really take advantage of the improved exhaust flow. Until then, enjoy the installation of the full ARH 2015 Mustang GT exhaust system.