Lozer Posted April 28, 2011 Share Posted April 28, 2011 I'm loking for ideas on how to silence the pair of glasspacks i have (mainly at Wot). The autox club ive been going to is now enforcing a Db lvl of 96 Db at 50ft. Quote Link to comment Share on other sites More sharing options...
kamikaZeS30 Posted April 29, 2011 Share Posted April 29, 2011 (edited) I run a pair of glass-pack resonators in conjunction with bullet mufflers and it's civil. Haven't had it all the way open, yet, but even under acceleration it's not that loud. What're you running? Just headers and pipes with glass-packs on the end? You could add some resonators. Edited April 29, 2011 by kamikaZeS30 Quote Link to comment Share on other sites More sharing options...
johnc Posted April 29, 2011 Share Posted April 29, 2011 I'm loking for ideas on how to silence the pair of glasspacks i have (mainly at Wot). The autox club ive been going to is now enforcing a Db lvl of 96 Db at 50ft. Replace them, add turn down, all a Supertrapp tip. Quote Link to comment Share on other sites More sharing options...
Pyro Posted May 7, 2011 Share Posted May 7, 2011 I'm loking for ideas on how to silence the pair of glasspacks i have (mainly at Wot). The autox club ive been going to is now enforcing a Db lvl of 96 Db at 50ft. Add a few more dynomax bullet glass packs in the trans tunnel area. Use perforated tube glass packs, not glass packs with bumps in the inside tube. Quote Link to comment Share on other sites More sharing options...
Lozer Posted July 13, 2011 Author Share Posted July 13, 2011 mmmk I was exactly at the Bd level required. But that dident stop me from digging around and finding a supe cheap and easy answer to hwo to cut down the drone. Your gonna laugh. Stainless steele wool, jammed in the pipe with a mesh screen to keep it from shooting out. I found that depending on the ammount you stick in you can have it as quiet as a pos prius. Quote Link to comment Share on other sites More sharing options...
Pyro Posted July 13, 2011 Share Posted July 13, 2011 sounds very restrictive to me. Quote Link to comment Share on other sites More sharing options...
Leon Posted July 13, 2011 Share Posted July 13, 2011 mmmk I was exactly at the Bd level required. But that dident stop me from digging around and finding a supe cheap and easy answer to hwo to cut down the drone. Your gonna laugh. Stainless steele wool, jammed in the pipe with a mesh screen to keep it from shooting out. I found that depending on the ammount you stick in you can have it as quiet as a pos prius. Bad idea, unless you want to restrict your exhaust and shoot fire out of it... Quote Link to comment Share on other sites More sharing options...
Lozer Posted July 23, 2011 Author Share Posted July 23, 2011 It may sound restrictive but depending on how much you cram in there you can make it a pretty good balance. I still have that nice Chevy rumble but it took out the WOT scream. I ran my monthly autoX with it installed last last week and there were no flames (heavy guage stainless dosent burn like the normal stuff)and it's all still there. The only negative was I couldent hear the exhaust note over my screming diff at the end of the day. Quote Link to comment Share on other sites More sharing options...
Pyro Posted July 23, 2011 Share Posted July 23, 2011 It is like eating a double cheese burger and larger fries then ordering a diet coke. You buy a "free flowing" muffler then pack it with crap. You should had bought a quiet muffler in the first place. Quote Link to comment Share on other sites More sharing options...
Lozer Posted July 23, 2011 Author Share Posted July 23, 2011 (edited) I can't argue with that analogy. The entire reason for this was to be within DB spec for the place I run at. When i'm not at the track the crap is removed. (2 min ordeal) Edited July 23, 2011 by Lozer Quote Link to comment Share on other sites More sharing options...
SHO-Z Posted July 23, 2011 Share Posted July 23, 2011 As said above Supertrapp is the way to go. They are tune able so by adding or removing disks you can control the db and back pressure. I bought one off of Ebay a while back. Quote Link to comment Share on other sites More sharing options...
Leon Posted July 24, 2011 Share Posted July 24, 2011 I think I'd go with the steel wool before I put a Supertrapp on my car... Quote Link to comment Share on other sites More sharing options...
rsicard Posted July 24, 2011 Share Posted July 24, 2011 Pyro has the solution with the bullet glass packs which cut out the high frequency audio components of the sound. Then all that is needed is a free flow muffler to attenuate the low freq component. Quote Link to comment Share on other sites More sharing options...
GOTHALOSISM Posted July 30, 2011 Share Posted July 30, 2011 I just got a glasspack exhaust done today and love the sound of it. Of course later down the line I can toss on a muffler if needed. Quote Link to comment Share on other sites More sharing options...
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