My tiny flowmaster 40 series is alot quieter than I thought it would be. For some reason on my truck I love the sound but on other vehicles I hated the flowmasters. I may end up adding another muffler or swapping to a corsa touring but I'm really pleased with the way it sounds. I can drive around incognito with a low idle and slight rumble but it gets regoddamndiculous once I'm at wot. I can't believe how much power I gained with the longtubes and efans, some dude tried racing me in a denali xl with some whack ass wheels the other day and I pulled away like he was standing still. Pretty sure the few press bends in my new system are much less restrictive than the huge dents I put in the magnaflow, still have no idea why that thing droned so bad but highway driving was just ridiculous and it kept getting worse. I'll drive this thing all summer and see how I feel, probably end up with a corsa and 3.5" mandrel but I like setting off car alarms for the time being. What really stumps me is the past few vehicles I've had magnaflows and they sounded great with zero drone, hoping it was a bunk muffler or something.