Invidia Q300 Cat Back Exhaust Single Subaru WRX / STI 2015-2021 | HS15SW4G3S

Was running muffler deletes with MAPerformance j-pipe and stock midpipe, but highway drone was intolerable on daily commutes. I decided on this exhaust due to it potentially eliminating all drone and being a bit louder than the quad tip version.

Going into it, I loved the way the FA20 sounded (especially the turbo whistle) on my previous setup, but I found it wasn’t worth the annoyance it caused to my passengers and me since I do daily a stage 2 WRX. It was hard to hear my music even with my whole trunk lined with Kilmat.

After installation, I really did miss my old setup, but the pros definitely outweighed the cons. 3” turboback and pretty much no drone. Since I threw Kilmat around my car, I can barely hear any of the exhaust note when commuting on the highway. But from the outside, the tone is way deeper and smoother but still sounds miles better than stock. The best part is that it sounds way better when you step on it.

I love this exhaust so much. Ive got killer b headers, boostlab 54x, J pipe and the q300 single. It sounds almost stock. It is so quiet, coming from the r400. It has thrown a couple people off, thinking it was just an impreza from the rear. Build quality is great, perfect fitment. Cover up that other exhaust cut out and its real stealthy. Love it, would 100% recommend if your not trying to draw attention

I had the Q300 dual exhaust on my 2017 sti but I crashed that car. When I got my 2021 sti I knew I wanted another Q300. This time I decided on the single exit version to try something different. This exhaust looks more stealth, actually looks like the OEM exhaust from an 2004 sti. I received the exhaust 3 days after I placed my order so I was really happy. This single exit Q300 actually sounds better than the dual exit version. It's slightly louder with a much deeper rumble, honestly This is the best exhaust I've ever heard on an sti. I would highly recommend this over any exhaust on the market.