Hey everyone! I recently picked up a 2021 WRX and I'm absolutely loving the car, but the stock exhaust is just a little too quiet for my taste. I really want to bring out that signature boxer rumble, but I’m struggling to decide which direction to go. Since this is my daily driver and I have a 30-minute highway commute every morning, my biggest concern is cabin drone. I’ve been looking closely at the Invidia R400 and the Cobb SS 3-inch, but I’ve heard mixed reviews about how loud they are inside the car at cruising speeds.
I’m looking for something with a deep, throaty tone that opens up when I’m on the throttle but stays relatively civilized while idling or cruising. My budget is right around $1,200, and I’m planning to do the install myself in the driveway, so a perfect bolt-on fitment is a must. I also really want some nice 4-inch quad tips to fill out the rear bumper cutouts a bit better than the factory ones do.
For those of you who have tried a few different setups, what do you think is the best cat-back that balances sound quality and daily drivability without being obnoxious? Any specific brands or models you'd swear by?
Honestly, I've had some pretty disappointing experiences with the popular "loud" brands on long commutes. Unfortunately, some of the ones already mentioned can get real boomy inside the cabin, which is a nightmare for a 30-minute highway drive. If you want that deep boxer rumble without the headache, I would suggest looking at the GrimmSpeed Gentlemen's Edition Cat-Back Exhaust WRX 2015-2021.
It’s specifically designed to be civilized while cruising but sounds absolutely mean when you're actually on the throttle. For your $1,200 budget, it’s a killer value proposition. Another solid technical choice is the AWE Tuning Touring Edition Cat-Back Exhaust with Diamond Black 102mm Tips. It uses their 180 Technology to literally cancel out drone frequencies. Both are easy driveway bolt-ons and the fitment is basically perfect. Tbh, the 4-inch tips on the AWE setup fill the bumper cutouts way better than stock ever could. Hope this helps with the daily grind!
In my experience, if you're worried about drone on a 30-minute commute, the GrimmSpeed Gentlemen's Edition Cat-Back Exhaust is exactly what you need. It stays within your $1,200 budget and the fitment is spot on for a driveway install. Honestly, it’s super civilized at cruising speeds but still gives you that deep rumble when you're actually on the gas. Plus, it has those 4-inch tips you're looking for to fill out the bumper! ✌️
I've been through several setups on my WRX over the years, and I totally get the struggle with highway drone. For your situation, I would suggest the Cobb Tuning SS 3-inch Cat-Back Exhaust.
In my experience, the Invidia R400 Gemini Single Layer Quad Tip Cat-Back is a bit too boomy at cruising speeds for a 30-minute commute. Here's my tip:
* Stick with a resonated midpipe to kill the drone.
* Use the GrimmSpeed Stock DP to 3in Catback Adapter for a leak-free driveway install.
But honestly, the Cobb fitment is perfection and it stays quiet until you really floor it!
To add to the point above: the GrimmSpeed is a solid choice, but I'm honestly surprised nobody has mentioned the Revel Medallion Touring S Cat-Back Exhaust for 2015-2021 WRX yet! It is hands down one of the best systems if you're worried about that 30-minute highway drone. It has this super deep, mature growl that sounds amazing when you're rowing through gears but basically disappears when you're just cruising at 70mph.
Facts.
Same here!