YouTuber’s LS Swapped Porsche Improved With Custom Exhaust
A hacked exhaust job on this LS swap Porsche means that a properly built exhaust makes all the difference.
Exhausts are musical instruments, when it really comes down to it. And musical instruments can range from the recorder you learned to play in 3rd grade, to the alto saxophone solo on Pink Floyd’s “Us and Them.” Car exhausts are no different as Alex Palmeri found out from Legit Street Cars.
He’s got an interesting project car on his hands in the form of a SEMA built 911. And it’s here on LS1Tech because it’s an LS swap, of course. However, being a quick-job SEMA build, much attention was paid to how it looks… and the important engine parts were largely overlooked. That’s especially true with the case of Palmeri’s 911. The exhaust is horrendous. Horrendous in build quality, in addition to the sound. It has terrible drone, and doesn’t really even sound good. It sounds like a Silverado that just had the catalytic converters cut off.
Thankfully, what is bad can be made better. Fluid Motor Union is a shop in the Chicago suburbs, and they set out to make an exhaust for this LS 911 that would actually do the motor justice. And not make ears bleed. The goal? Quiet down the drone a bit, and have it sound a bit more exotic. Since this is technically a wind instrument, both are possible without any additional modifications to the engine.
Since the car already came with a good set of shorty headers, those were retained. That left the focus to re-routing (the old setup would cook the starter motor) and volume control. Yes, “too loud” is such a thing. Especially when the sound is mechanical gargling.
One thing that helps LS engines tremendously is crossovers. Based on packaging and limited space, an X pipe style exhaust fits the bill the best. This X pipe merges the pulses from each bank giving the engine a very high strung and almost exotic sound. Then, a muffler helps keep that volume under control when cruising. The end result? A night and day difference. Before, it was loud and obnoxious like a demo derby car. After, it sounds as good as any modern exotic.
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