I was browsing sfx perfomance when i came accross some glass packs, now i know what they are and what they do, but my ? is whats the differnece between all these, they all have the same discription just with different pricing and shape.

http://www.sfxperformance.com/catalo...aust%20Systems

 

They're an old school muffler. The differences between the sizes and shapes are the sound levels. A bigger glass pack will quiet more than a small one will. And the sizes listed on that page are the sizes of the exhaust pipe. Do yourself a favor and DON'T get one.

 

no disrespect intended but whats wrong with flowmaster or magnaflo??? you get what you pay for. but you know that you bought an f150 lol.

 

yea, glasspacks are loud, but thats about it, theres no quality to them whatsoever, and the popping and rap off is ridiculous sounding, get a regular muffler

 

yea. my buddy put a glass pack under his truck and tried telling me it sounded like a flowmaster. it may have in the first month or so but once them things get "broken in" they start to pop and rattle and the only thing to compare the sound to is someone farting into a coffee can. ugly sound.