Silent But Deadly
- Thread starter nvr2late
- Start date
BobbyBuick
Well-Known Member
- Joined
- May 24, 2001
PYPES OR HOOKER
Hooker is what I have now. Much too loud. The constant droan on the highway makes me not want to drive her.
turbofabricator
Well-Known Member
- Joined
- Mar 7, 2004
Dennis Hogan runs 9.90's @136 through three mufflers. Two under the rear seats, and a dual pass cross flow Walker Ultra Flow behind the rear end. Straight through mufflers (Ultra Flows) and 2.5" mandrel bent stainless. The car is church mouse quiet. (Only at idle/cruise). And there is no drone. Anyone that says their system doesnt drone must be deaf, LOL. Dennis spent a fortune trying just about EVERY system and muffler out there. I even wrapped the entire system from cylinder head port to,the tail pipe exit. Did nothing, 3" ultra flow where the cat resides, NO IMPROVEMENT, The only muffler that quieted down was a stock Riveria muffler, but it killed performance. We hung weights trying to tame drone. The ONLY thing that worked and didn't KILL power output was adding the cross flow muffler. On his race car he had a 3" version built, and that car ran 9.0 @ 149. Search for three muffler system and you can find pictures.
getdowngranny
Mr. Fix It
- Joined
- Jan 8, 2006
I had the same desire to go quiet. This is how I did it:
http://www.turbobuick.com/forums/threads/whisper-quiet-exhaust.387399/
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http://www.turbobuick.com/forums/threads/whisper-quiet-exhaust.387399/
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Here is the old thread
http://www.turbobuick.com/forums/threads/3-mufflers-for-a-quiet-system.167389/
pics of my system are in there. Still on the car, still "stock GN" quiet, or "stock GN with no cat" quiet. I like being able to hold a normal conversation while driving.
Bob
http://www.turbobuick.com/forums/threads/3-mufflers-for-a-quiet-system.167389/
pics of my system are in there. Still on the car, still "stock GN" quiet, or "stock GN with no cat" quiet. I like being able to hold a normal conversation while driving.
Bob
I have a 3'' single exhaust without a cat converter. I had the local muffler shop make 2 pipe sections for me out of mild steel. I use a 3'' Moroso Spiral flow muffler where the stock cat convert used to be on the end of my ATR 3'' down pipe, then 1 of the short sections of pipe then a 3'' Hooker Aero chamber muffler then the other short section of pipe going to the rear end and up over it and exits behind the passenger rear tire. The car has some sound to it but it's not loud, until i put my foot in it. I can have a normal conversation in the car and listen to the radio at normal sound levels without a problem. I have all sound deadening padding removed from the car also to save weight. It probably doesn't sound like the best flowing system but if there is any draw back to it i can't tell. It didn't cost a lot for this system and it's about 13 years old.
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You all should specify what mufflers you are using. My car is almost stock quiet with no drone with a Hooker dual 2.5" system from the late 90's that still has the super turbo style mufflers that came with it. Straight through mufflers will give off the drone.
getdowngranny
Mr. Fix It
- Joined
- Jan 8, 2006
Dynomax VT are straight through mufflers and DO NOT drone.
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Phoneguy
Cometic HG stress tester
- Joined
- Aug 27, 2002
Dynomax VT mufflers here too...Went on the car in 2011 , I ordered the Pypes 2.5" system and deleted the Race Pro's . As far as I know I was the guinea pig for these mufflers.
I removed the Hooker system from my car due to the drone. ..
There is a link with a sound clip of the VTs in my signature
Super happy with the sound and no drone. Can have a normal conversation in the car and no longer NEED to turn the stereo system up ...but I do anyway.
Bryan
There you go, AMEN!!!
