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sdm1234 -> RE: straight pipes?? (1/3/2008 3:15:14 PM)
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with "agressive tone" you you mean a deep rumble, or a loud rasp like musclecars? a fiberglass packed muffler will give you a deep, throaty tone, like a Dynomax Ultraflo or Magnaflow. a chambered muffler will give you a raspy, musclecar sound, like a Flowmaster or Hooker Aerochamber. There are MANY ways to achieve a desired sound. Firstly, decide on what kind of sound you're looking for and if you need to pass emissions. Then, decide on headers. Shorties, mids, or LTs all have their advantages. Shorties will fit in factory applications, but lack great performance and are more oriented for high-revving applications. LTs are the ultimate in performance, but require a custom fit exhaust or complete kit. These will significantly help in low-end TQ, especially when matched with an X-pipe. Also, they help with overall deep resonation. If you're looking to pass emmissions, make sure to find headers with emissions piping. High-flow converters also will be a must for legal useage, and will not affect performance. The larger the diamater, the deeper the exhaust note, but on our 4.3L i don't recommend going any higher than 2.5in piping, unless you're running some SERIOUS consistant horsepower (like 400+). Dual exhaust is great for performance and sound, and you'll have no trouble with fitment issues. This route also gives you more muffler options. You can run dual mufflers, or the new Dynomax Ultraflo X muffler as your X-pipe, or you can run straight, chambered piping like the old '69 musclecars, or cheap little cherry bombs (which sounds like an exhaust leak IMHO). After the entire piping is decided, then a tip/tips must be chosen. The larger diameter the tip, the deeper the tone, and you can go as big as you want. Just don't go too big, because that'll just look wierd...
Go on all the manufacturer's websites to browse their exhaust notes. There is no ONE BEST muffler. It's all about just deciding what sound you want (unless you're choosing for a high HP race-application, then there IS such thing as a best, least restrictive muffler...) Good luck and let us know what you've chosen!
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