Super HP-2 Muffler 409SS - 2.25 Center In./2.25 Center Out - Moderate Sound. Flowmaster has taken the laminar core of our classic HP-2 muffler and wrapped it in a new compact square case. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar flow mufflers, now in a new sleek styling. These mufflers are available in either a 409S stainless steel case or a polishable 304S stainless steel case and in sizes ranging from 2.00 in., 2.25 in. and 2.50 in. These mufflers are covered by Flowmaster's Lifetime Limited Warranty.. Universal Muffler - Not a direct fit. Some adaptation required.
CAN YOU TOLERATE OBNOXIOUS EAR POUNDING PULSATION?
I installed this on a 1997 Ford E150 with a 5.7L V8. The only metal to metal contact is with the Y pipe header from the exhaust manifolds. The "thunderous drumming" inside my van is only relieved somewhat with the windows open. It especially occurs under acceleration, any kind of acceleration. At sustained speeds, when there is no load on the engine, there's less "drumming/ percussion inside my van.
I can't recommend this muffler. The novelty quickly wears off. My wife will not ride in the van since she says the "drumming/percussion" hurt her ears. The annoyance is still there, even when wearing shooters ear muffs. Go ahead, do your thing, but don't say I didn't warn you.
I'm sure that if police would have me rev my engine into a decibel meter, I'd surely get a citation for excessive noise.