Installed these mufflers Borla 40351 on my Lexus gs350. Unfortunately, there's a decent amount of "low hum/hum" from the drone at around 2-3,000 rpm, which equates to 70-80 speeds on the freeway. I used to remove the muffler and it was louder, but all the reviews online and on forums said they have no hum. 1500 km driven, the noise is the same. Can reset normal silencers, time will tell. I also had a Helmholtz resonator welded on, which didn't help much even after calculating the required length.
TOTALFLOW 646 Mini Muffler 409SS 4.5" Round Width 4" Body 6" Overall Length Inner Inlet-3.5" Outer Diameter Outlet
39 Review
Synthetic engine oil MOBIL 1 ESP 5W-30, 4 l, 1 pc
60 Review
50' Titanium Exhaust Heat Wrap Roll For Motorcycle Fiberglass Heat Shield Tape With Stainless Ties By LEDAUT 2
28 Review
Game console Valve Steam Deck 256 GB SSD, black
59 Review
2007-2017 Jeep Wrangler JKU 4 Door Sunshade Mesh Top Cover - Durable UV Protection With US Flag Design - Voodonala
31 Review
820Pcs Car Push Retainer Clips & Fasteners Assortment - Ford GM Toyota Honda Chrysler BMW Benz Nissan Subaru Audi Mazda
32 Review
Upgrade Your Driving Experience With Lunsom'S Automatic Shift Knob: High-Quality Metal Car Shifting With Push Button & Long Stick Gear Head In Black
38 Review
Upgrade Your Mazda MX-5 Miata With CravenSpeed'S USA-Made Door Bushings
39 Review