Travieso
Boooooooost !
here is my opinion coming from that i had both 40 Series Flowmaster on my 1999 Chevy Tahoe
And current have 22" Magnaflow on my current vehicle 2006 Chevy Tahoe
Flowmaster - Drone, Very Loud Love the sound of them but it gets old real fast when you have kids and can't have a conversation with the wife
Magnaflow - Very quite, But comes alive on WOT, no drone what so ever.
didn't notice any performance increase on either or.
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