Great product! Works as described.

Great fit and finish and awesome sound. Only recommendation is to weld it together or have someone do it as the supplied clamps aren't great and could cause leaks over time.

Came as advertised - packaging was thorough for a delicate item. Shipping was a bit expensive.

Night and day difference from the stock air vent, improved throttle performance, IAT drops significantly quicker. Paired this with an aftermarket oiled air filter and have seen vast improvement. Others have mentioned an increase in MPG but I haven't had the scoop on long enough to get through an entire tank of fuel. 2023 GMC Sierra 1500 LZ0 Duramax.

The minute I started it after getting it installed I loved the roadie and meteor sound and it was definitely not overdone. It's the perfect amount. I love being able to hear my RPMs go up and down and it's not too drone by any means I also noticed a little bit more Kick when driving it.

Worth every penny.

Deep tone, great looking under the truck and easy to install! Also you can really feel the extra horses on the throttle!!

I bought this thinking it wasn't going to do or change much, but man this makes driving my maxima so much more fun and smoother!

My wife and I bought a brand new 2024 Z knowing that the stock exhaust was terrible. Almost immediately, we ordered the Stillen Comp exhaust and absolutely love it.
Totally painless to install and a WORLD of difference. Listen/watch the comparison videos - Stillen is the way to go. Even the guy that installed it said it was one of the best sounding exhausts he’s installed.

I loved this product, i wish it came with rubber grommets to bette protect the metal

Easy install and there is a noticeable difference in response in the midrange.

Looks n performs great

The installation couldn't be easier; it is truly plug-and-play. I encountered no issues, though I mounted the box several times to pick the best spot. On the road, the power gains are noticeable, and it pulls harder when passing for sure. I will need more testing to see its impact on lap times, but I am very happy so far.

they fit perfectly and look amazing

5 star, no need for lengthy instructions. Simple as building a lego. Only problem I encounter is they sent a coarse thread allen screw. But overall I think not just in my mind that it actually gained a bit powaaah. Bought this to replace the oe broken tabs air intake box.