BORLA 40357 ProXS Universal Performance Muffler 2.25" Offset Inlet / 2.25" Center Outlet 4" x 9.5" Oval x 14" Long body 19" Overall Length Reversible Design T-304 Stainless Steel

I bought this muffler (Borla 40357) for my 2005 Toyota Tacoma Xrunner. It is 2.25' offset/center on the inlet/outlet. When I first got it out of the box, I was very surprised how heavy it was (probably 7-9 pounds). It's appears to be very well constructed and of very high quality. I ordered the 2.25' version after reading that Toyota uses metric size tubing and the 05-08 Tacomas are closer to the 2.25' diameter, while the 09+ models are closer to a 2.5' diameter. I had it installed at a local muffler shop and had it installed. He said an offset/offset inlet outlet would have fit better, but he made it work. Upon initial startup, (the rest of my exhaust is completely stock) I couldn't tell a lot of difference between the 22 inch long chambered stock muffler and this 14 inch long straight through muffler. I've put about 500 miles on it in the first 3 weeks of having it. There is some noticeable resonance in the cabin from 2300rpms to about 2700rpms when casually accelerating. When you're coasting or maintaining speed, it is nearly identical in volume to the stock muffler. On the highway, I notice a little bit of drone/resonance, but it's not bad. My truck isn't very quiet in the cab to begin with, and I've ordered some sound deadening mat to counter the road noise and small amount of resonance. In regards to sound , this muffler sounds great. It's very deep and rich, mellow under mild acceleration but really wakes up when you get on it. There is no raspy sound to it and no loud popping, just a very mellow gurgle when decelerating. In regards to performance, it feels like it has a little more low end torque, and when decelerating, I've noticed the back pressure is greatly reduced (probably half of what it was). Overall I'm very happy with my purchase and would recommend it to anyone wanting something mild, but noticeable to replace their stock muffler. Here's a link to a video of what it sounds like on a stock Tacoma. I think mine's a little quieter because it's 2.25' vs his 2.5' version (40352). https://www.youtube.com/watch?v=XU-IlLA5i_w

Sounds good on a Jeep yj 4.0

2.5l toyota 2026 camry hev. Has actual sound now replaced from stock muffler sounds good no horrible buzzing sounds. Tone is deep and throaty not annoying at highway speeds

Nice

Very nice tone with low drone. I am very pleased with the quality also.

Very good sound, low rumble at idle, throatie at higher rpms and minimum sound at cruising speed 65-70mph. Overall a very good product!!

Installed on Jeep ZJ V8. Deep sound and straight through design all while maintaining a very tolerable sound level! Switched from a flowmaster super 44 and am very happy!! Somehow deeper while not bugging the neighbors like the flowmaster was.

I put this on my BMW 320i exhaust and I love it, It has a deep tone at idle , and hardly heard at cruising speeds. Gives the 3 Series a sporty sound without the expense of the OEM sport exhaust. I had the local muffler shop fabricate some additional pipe and weld in place at a fraction of the cost.

La verdad estaba con muchas dudas si resultaría el tono qué estaba buscando, pero cumple lo que promete, no es súper ruidoso, pero le agrega ese toque especial en un acelerón, pero no lo hace molesto en carretera, realmente lo disfrutas y ha sido duradero.

I like how nice sound and not heavy not to loud but just a great touch overall. Borla it’s the way guys!!!

Suena perfecto, no es molesto el sonido

I install two of these on my V8 Jeep w/o a cat and the sound is amazing. I’m very happy with this purchase and would totally recommend this product.

On Toyota solara