Dynomax or cherry bomb
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I just recently installed a dynomax bullet model 24222 which is 12 inch case 3 inch in/out. Like it way better than my old flowmaster. Deeper and louder throughout the rpm range. Here's a couple videos if u are interested. First is old flowmaster setup and second two are the bullet. Truck is 06 5.4. No popping or crackle.
https://www.f150forum.com/f4/flowmas...videos-126558/
https://www.f150forum.com/f4/flowmas...videos-126558/

