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Old 02-12-2012, 08:48 AM   #11
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Originally Posted by fordfreakout93 View Post
hey i have true duals with glass packs. i want to know is there away to make it so my truck is louder without having to cut the glass packs off? i dont want to pay anymore money on my exhaust
You may need pay some $ to the court on your exhaust even with the glasspacks.

http://www.pca.state.mn.us/index.php..._view/gid,2172

See pages 26-28
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Old 02-12-2012, 09:44 AM   #12
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Ok, OP, how long have the glass packs been on your truck? Me and a buddy put a 24 inch glass pack on his 4.3 Silverado probably 4 months ago, and that truck is still getting louder.
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Old 02-12-2012, 09:49 AM   #13
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glass packs are more restrictive than a regular muffler...so just take it off...
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Old 02-12-2012, 10:09 AM   #14
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glass packs are more restrictive than a regular muffler...so just take it off...
I dont know who told you that but they are dead wrong, a glass pack is basically a straight pipe wrapped in fiberglass, so when the air flutes through it the fiberglass gives it a rumble, it does nothing to slow down the exhaust like a stock muffler would.

As to how to break it in, run your truck for awhile give it some gas and let it get warm, then dump ice cold water on it while its still hot, this will break up the fiberglass and make it louder
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Old 02-12-2012, 10:27 AM   #15
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if you want to get your glasspacks louder pour gas in them and get going about 55-60mph then shut your truck off while your still going 55 and in gear. you will hear a bang. and your glasspacks will be burned out and as loud as they can get. trust me it works my dad did it on his.
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Old 02-12-2012, 11:22 AM   #16
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Or give it to this guy... He'll do it for you

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Old 02-12-2012, 02:37 PM   #17
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Ok I've always put the glasspack close to the bhottest p?art of the exhaust to heat them so they break on there own or use a torck get them nice and hot and smac@k it with a hammer or use cold water I've gotten mine super hot and back down a boat ramp into thbe water before
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Old 02-12-2012, 02:42 PM   #18
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I dont know who told you that but they are dead wrong, a glass pack is basically a straight pipe wrapped in fiberglass, so when the air flutes through it the fiberglass gives it a rumble, it does nothing to slow down the exhaust like a stock muffler would.

As to how to break it in, run your truck for awhile give it some gas and let it get warm, then dump ice cold water on it while its still hot, this will break up the fiberglass and make it louder

Really?????? you care to bet on that... I have YEARS of Dyno experience that proves otherwise...

the flutes cause Turbulance which aids in Reversion which impedes flow... even though you can see straight through it it IS more restrictive than a walker Turbo Muffler...
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Old 02-12-2012, 07:12 PM   #19
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Quote:
Originally Posted by dr_bowtie

Really?????? you care to bet on that... I have YEARS of Dyno experience that proves otherwise...

the flutes cause Turbulance which aids in Reversion which impedes flow... even though you can see straight through it it IS more restrictive than a walker Turbo Muffler...
Ok, I did not know about the flutes turbulance, and definatley agree about proformance mufflers, because they do just that preform, but I read your first post like stock mufflers are better, and I just can't beleive a stock muffler would be better then a glasspack, but then,again I'm not a mechanic, and it wouldn't be the first time I was wrong
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Old 02-12-2012, 07:27 PM   #20
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in some cases the stock muffler is better flowing....just not the stock muffler on the 300-6... mine was the big long round one and it SUCKED....
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