People are trying to figure out why Amazon's delivery trucks sound like a 'demonic crow' when backing up
![2.5 Inch Inlet Y Pipe, 12 Overall Length Stainless Steel Diesel Y-Pipe Exhaust Muffler Tip - Walmart.com 2.5 Inch Inlet Y Pipe, 12 Overall Length Stainless Steel Diesel Y-Pipe Exhaust Muffler Tip - Walmart.com](https://i5.walmartimages.com/asr/9358bd9d-81ca-4a1c-ab77-e3bdf80f0931.3076dfce778dcca8a88bd20dfbc1bf85.jpeg)
2.5 Inch Inlet Y Pipe, 12 Overall Length Stainless Steel Diesel Y-Pipe Exhaust Muffler Tip - Walmart.com
![Amazon.com: TOTALFLOW 943 Mini Muffler 409SS | 3.25" Round Width | 7" Body 9" Overall Length Inner Inlet-2.25" Outer Diameter Outlet : Automotive Amazon.com: TOTALFLOW 943 Mini Muffler 409SS | 3.25" Round Width | 7" Body 9" Overall Length Inner Inlet-2.25" Outer Diameter Outlet : Automotive](https://m.media-amazon.com/images/I/61Mg1L6W7lL._AC_SY355_.jpg)
Amazon.com: TOTALFLOW 943 Mini Muffler 409SS | 3.25" Round Width | 7" Body 9" Overall Length Inner Inlet-2.25" Outer Diameter Outlet : Automotive
![Amazon.com: Fits Mercedes C300 - High-Performance Tuner Chip and Power Tuning Programmer - Boost Horsepower and Torque : Automotive Amazon.com: Fits Mercedes C300 - High-Performance Tuner Chip and Power Tuning Programmer - Boost Horsepower and Torque : Automotive](https://images-na.ssl-images-amazon.com/images/I/31Gu51LTGZL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingTHREEANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA15%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)