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Old January 16th, 2008, 09:53 PM   #1
Jedi
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Smile Exhaust System

I've been thinking of getting a new exhaust system for my 04 Boxster S, I would appreciate any info concearning headers, mufflers, brand names, performance, sound etc.

Thanks in advance
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Old January 16th, 2008, 10:38 PM   #2
Docdanracy
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what is it you want to achieve?
torque
HP
sound
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Old January 16th, 2008, 10:44 PM   #3
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All three would be nice, however not to noisey
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Old January 16th, 2008, 10:58 PM   #4
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the cheapest and neatest way to do it is have a knowledgable shop remove the stock muffler and remove some of the baffling.

if this is done correctly you can achieve a nice sound, increased HP and still look deceptively stock.

we have done this to a stock 2.5L and have dyno sheets showing an 11hp increase over stock dyno run.

no other mod to the exhaust system or intake was done at that time.
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Old January 17th, 2008, 01:46 PM   #5
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there are also numerous threads about exhaust here and on 986forum
Simply look for keywords, like
  • GHL
  • Fabspeed
  • PSE
and you will get more opinions than you initially wanted ;-)
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Old January 17th, 2008, 08:46 PM   #6
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Quote:
Originally Posted by Docdanracy View Post
the cheapest and neatest way to do it is have a knowledgable shop remove the stock muffler and remove some of the baffling.

if this is done correctly you can achieve a nice sound, increased HP and still look deceptively stock.

we have done this to a stock 2.5L and have dyno sheets showing an 11hp increase over stock dyno run.

no other mod to the exhaust system or intake was done at that time.
Can you make any recommendations for such a shop here in the Bay area that could make such a knowledgeable surgery a success?
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Old January 17th, 2008, 08:53 PM   #7
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Sportech Campbell ca....408-377-8055 Mark is the owner and surgeon.

tell him Dan gave you his name.
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Old January 17th, 2008, 10:01 PM   #8
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Just to be clear, does this surgery have any negative effect on the smog-worthiness or the legality of the car's operation (for e.g., from a decibel level standpoint)? Sounds like a no brainer if there are no side-effects.

Also, is this reversible? Or does the surgery leave "permanent scars"? TIA!
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Old January 17th, 2008, 10:08 PM   #9
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as far as visible scars....none....but it would be tough to reverse...kind of like a vasectomy

but a replacement stock muffler for a Boxster is pretty cheap on craigslist or Ebay.

the sound is a bit louder, but not as loud as some of the aftermarket mufflers.

does not effect smog at all.

If you want to hear one on a Boxster, the owner Mark has one on his car...it sounds fairly normal until you get it up into the RPMs, then it sounds great.
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Old January 18th, 2008, 10:03 AM   #10
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Maxspeed

I came across Maxspeed, they have an exhaust-header setup for $1050 it almost sounds to cheap, does anyone have any information on this good or bad?

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