Just purchased this system for my 2023 Q50 redsport This system with the AMS race down pipes holy cow that exhaust set up with the stillen air filters and stillen tru controller tuner is LETHAL….This car doesn’t even feel like the same car it’s VERY powerful and snappy!… You guys at stillen have been so good to me over these last couple months ordering parts. The quality of these parts is absolutely EXCEPTIONAL as well… I hope many see this comment and do the same for their self. Everyday driving my car is a joy I always come home smiling. DONT hesitate to buy these parts!

I just installed the CAT-BACK exhaust on my '17 Infiniti Q50 and the videos just don't do it justice. Maybe if you're viewing the video through a surround sound system, which I did before I purchased, (still didn't do it justice) you won't be able to understand the quality of sound coming out of this thing. Deep, deep, humm when at idle, enough to set off every car alarm in a high rise garage. Not loud, but LOW. Like having a subwoofer installed under your car. EXCELLENT! Reminds me of a 1987 Ferrari Testarossa crossed with a 2020 Dodge Charger RT Hemi. Makes a complete difference in how your car sounds and performs especially of you are running a turbo engine. Really cleans up the lag, especially in anything under 4500rpm's. Stillen does not disappoint. The day I installed it I had two separate people in separate places tell me my car sounded like The Batmobile. Two people! Same day installed! Same comment! (Though my car is all black with black rims so I've the Batman comment before, but obviously not about sound) Get another brand if you want to, and when someone rolls up on you with Stillen pipes installed, you're going to be kicking yourself in the ass!

My first mod to my 2017 Q50 3.0T was the Stillen Cat-back exhaust sounds perfect. Next mod is Stillen intake. Cold starts sounds perfect only thing is that it won’t back fire with a stock car obviously.

I've used Stillen for years and this has to be one of my favorite upgrades. Should have been a slam dunk install but the driver side downpipe was the wrong one. The next day since I live in the same area as the factory I drove my car there and they dropped what they were doing and fixed it and now my baby is growling down the streets like a crazed Lion. I matched the exhaust up with the Stillen intake and the car just flys. My 2017 redsport is my favorite car even and Stillen contributed a great deal to my happiness