These appear to be externally the same as the 20' Dyonmaxes I have now. Today, figuring I had exhausted all avenues with those turbo muffler I ordered a pair of quiet flow pt#22502 from O'Reilly's. (Which used to be fine, but now even a bathroom fan seems loud to me.) Had I developed tinnitus first, I certainly would not have chosen performance mufllers because, lets face it, they do often have a mild 'whoob whoob whoob' noise to them. That was even better, so I put the H pipe on and things got even better still. Anyhow, as the tinnitus continued to develop, I added the first pair of resonators and the truck was quieter so I put another set on on the tailpipes. No surprise there as I've lived a noisy life. Then late 2019 I got what I thought was a persistent cold and developed tinnitus (Who knows, maybe I was an early victim of Covid ) anyhow the Doc put me on Prednisone and failing that an audiologist found I had upper range hearing loss. I had built it first with true duals and the 20 inch Dynomaxes and was fine. The exhaust has evolved since I got tinnitus. I would try the Caddy mufflers first, of course, but just food for thought. I wonder if the crossover and all the resonators are part of the problem. The science behind X and H pipes is irrefutable when it comes to HP and 'sound' but for some reason it was the source of that 'tone' that was driving me nuts. I had a terrible drone that made my truck undrivable until - after trying nearly everything, including four different mufflers - I deleted the X pipe. That is why I am wondering if it is not the volume but the drone and vibration that is aggravating. I have Corvette 2.5 inch manifolds too, and I love them.Īs to Dave's issue, my father has tinnitus and my heart goes out to anyone suffering from that condition. They really help with the ringing in my ears, I was surprised. I have to wear hearing aids though since my hearing is gone. I'm using Walker SoundFX Mufflers - I think those quiet flows would be even more quiet. I just installed corvette 2-1/2' manifolds instead of the headers and had to have the shop re-run that part of the exhaust, While they were at it I had them remove the resonators since manifolds are quieter. Has anyone here ever built a whisper quiet dual exhaust? Hell, I can't even stand to listen to music anymore. Sorry for the essay but I'm at my wits end and I think tinnitus is slowly killing the joy in my life. I know it must be possible because my Silverado is like that and sadly, the '66 is getting left in the garage in favor of the Silverado way to often for that very reason. I don't want a 'nice tone, a mellow rumble, etc' I simply don't want to hear my exhaust when I drive at all. Does anyone have experience with these mufflers? As a last ditch effort I am considering swapping the 20' Dynomaxes for a pair of Walker Quiet flows. It is rather quiet but in spite of all the sound deadening and all that work I still hear the exhaust and end up with the ringing buzzsaw in my head after driving a while. The pipes continue to 20' Dynomax mufflers under the bed and go over the axel with mandrel bends dumping into another pair of resonators and out under the rear bumper. I have an H pipe below the tranny and the pipes transition to 2.25 where they dump into dual resonators under the cab. My '66 has 2' ramhorns dumping into dual 2' headpipes. It seems the volume of the whole world is just cranked up to ten.

Not as bass-ey (sp?) sounding.I've got tinnitus really bad. It is a little different than the Thrush's. I do and did just this morning get complomented on the sound. The Thrush muffler, I could take a finger and push the caseing in, dimple it with the finger/hand. The Hooker is a heavy in weight muffler with a notably thicker case than the Thrush unit. The difference is small, but I did notice it along with 3 other sets of ears. The previous mufflers were right out of the summit racing catolog. Not just IMO, but the wifes, my Daughters (13) and my Son (5) made that mention to me. The names Thrush, Walker & Dyno Max all seem to be under on manufaturer, via a link on the above links page, to the right after you click it. I'll provided a link to the part Thrush mufflers is what I used.

Quiet 3 inch muffler