Upower Stainless Exhaust Muffler Straight Review

This muffler turned out much better than expected. The material wasn't the best, but the price seems acceptable. The welds were clean and the construction looked neat. The only thing that bothers me is the noise. The muffler is louder than I expected. The tone is deep, but too aggressive for me. It also has a hum, but only at lower revs and revs. As soon as you open the throttle to about 15%, the noise decreases.

It had a chatterbox back that was too loud. Replaced the resonators with these. Sounds amazing! A very small drone compared to the previous one. Deep, pleasant sound. I had to "clean" one of them by hitting it directly on the seam with a hammer. Thought the welds would burst. I was surprised this wasn't the case. The muffler is a bit heavy, but that's probably why it took the hits. Incredible value. If you want a growl that's deep but not too loud, this is a great option.

If you're into whoops on a Honda Civic, you'll love it. With this "muffler" there is absolutely no back pressure (straight through construction) resulting in terrible performance. I mounted it on my 2012 Jeep Wrangler with a 3.6L engine. I removed the resonator and put it in place of the silencer. Loud as could be, the group went to the toilet. Took it off and replaced it with a Dynomax Turno muffler, performance is better than stock and the sound is great!