Next upgrade...
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RE: Next upgrade... - 8/14/2008 6:09:41 AM
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virgin1
Posts: 4858
Joined: 3/15/2007
Status: online
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Where to start, where to start....
1) The catalytic converter in the exhaust system is part of the emissions system required by law and helps eliminate the bad stuff coming out of people"s tailpipes. I would not consider eliminating it if I wuz U, but AM high-flow cats are available for better flow/less restriction through it.
_____________________________
 "There is no tool you can buy that will replace experience." - Josh Mills, C.K.DeLuxe
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RE: Next upgrade... - 8/14/2008 6:10:13 AM
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virgin1
Posts: 4858
Joined: 3/15/2007
Status: online
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2) Headers replace the stock (usually) cast-iron manifold with mild or stainless steel tubing. They are designed to work best at certain engine speeds but all "should" use equal length tubing for the best extraction and sound. Rule of thumb here is that a 4-2-1 offers better mid-range power and therefore is better for normal street driving, while a simple and less expensive 4-1 will be best at higher RPMs such as track use.
Most will eliminate the cat, hence the "for racing use only" label. The other reason for that is that DOT and CARB approval costs money and time, and most companies don"t bother w/the red tape. I don"t care who''s you buy, these will make the car noisier and the ones w/the worst designs will have a loud, distinctive metallic ping-ping
_____________________________
"There is no tool you can buy that will replace experience." - Josh Mills, C.K.DeLuxe
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RE: Next upgrade... - 8/14/2008 6:10:34 AM
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virgin1
Posts: 4858
Joined: 3/15/2007
Status: online
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3) Cat-backs? Sure. A nice place to start. For the 6, your choices are more limited than ours w/a 3 series, and the V6 cars even more so. Don"t expect the world from a cat-back though. The best ones have a nice rumbling sound and don''t drone the interior @ speed. The worst ones sound like a Honda on steriods... often called "ricing," or a "fart-can" muffler.
_____________________________
"There is no tool you can buy that will replace experience." - Josh Mills, C.K.DeLuxe
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RE: Next upgrade... - 8/14/2008 8:43:00 AM
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larryjay57
Posts: 120
Joined: 8/6/2007
From: Madison Wisconsin
Status: offline
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Alright, one thing is cat in cat-back short for catalytic? Basically what I am looking for is a system weather its a cat-back or header w/e. I want one that it louder/meaner than the stock but I deffinatly don''t want that ricer sound, a low rumble like you said would be ideal. I have the 4cyl model just fyi. Now other than a cat-back exhaust are there othe type of exhaust systems? And idealy I don''t want my fuel economy to go down, so if that means a smaller boost in hp and tq so be it. Thanks theres alot of stuff out there and its hard to weed out whats good and bad, what to avoid and what to jump on.
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2003 Mazda 6i Sport
Street Glow Interior Lighting
RAZO Competition Pedals
PIAA 1400x Fog Lights
AEM Cold Air Intake
Magnaflow Full Cat-Back Exhaust
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RE: Next upgrade... - 8/15/2008 10:52:25 PM
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larryjay57
Posts: 120
Joined: 8/6/2007
From: Madison Wisconsin
Status: offline
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Exhaust system prices, again does double the price mean twice as good? probobly not but is it worht it?
ex:
A Magnaflow exhaust is around $500
A Greddy Evo-2 Exhaust is around $900
A Racing Beat exhaust is $430
A SRM exhasust is $700
A Apexi is about $720
A Tanabe is $500
any recomendations? as wellas ones not mentioned?
_____________________________
2003 Mazda 6i Sport
Street Glow Interior Lighting
RAZO Competition Pedals
PIAA 1400x Fog Lights
AEM Cold Air Intake
Magnaflow Full Cat-Back Exhaust
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