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Old 04-19-2012, 12:28 PM   #31
darkangelism
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Quote:
Originally Posted by Bwill9886 View Post
My thought was that you could move whatever muffler you have after the header back enough to put a cat in between the two.

Obviously this may not work for all mufflers, as most systems seem to have different sizes but it should work in most cases.

For those looking to do this mod in the near future, I'd suggest getting in good with an exhaust shop and having them make you a custom catback that's ready for an extra cat to be added. Could end up being cheaper than buying a full cat-back and having to modify it.
yeah a custom would be better, but for the $500 fswerks stealth and just swapping the rear muffler with the cat and adding a foot or so of pipe would be the most cost efficient method without cutting any of the fswerks parts to make space for the muffler. That could be fully done for $700 including the cat and extra piping.
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Old 04-19-2012, 01:54 PM   #32
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The butt Dyno feels great duratec usually see 15-20whp with full headers and exhaust. The sound is quieter then the fswerks race system still. No drone at any speed while cruising it sounds like my car doesn't even have exhaust. My system could be considered a 2.5" stealth system.
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Old 04-19-2012, 02:00 PM   #33
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Focus boy does your exhasut have two mufflers and a resanator
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Old 04-19-2012, 02:02 PM   #34
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+1 rep and you still work/live in philly right? would you mind helping me out if i do this? ill throw some cash your way
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Old 04-19-2012, 04:11 PM   #35
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Quote:
Originally Posted by FocusBoy58 View Post
The butt Dyno feels great duratec usually see 15-20whp with full headers and exhaust. The sound is quieter then the fswerks race system still. No drone at any speed while cruising it sounds like my car doesn't even have exhaust. My system could be considered a 2.5" stealth system.
Would you mind giving a "layout" of your current exhaust? We all know you've got the headers and no cats with a 2.5" system, but what about mufflers? 1? 2? resonator?
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Old 04-19-2012, 09:03 PM   #36
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Would you mind giving a "layout" of your current exhaust? We all know you've got the headers and no cats with a 2.5" system, but what 2about mufflers? 1? 2? resonator?
2.5" borla 6" round by 20 long with a borla traverse mount at the end. Two total mufflers

Also I found one Clearance issue and it is AGAIN the Flex pipe where I thought the issue would be. It touches the Subframe under full load.. CANT WAIT TILL WE GET POLY MOTOR MOUNTS!

For Now What I did Is put a 2" piece of rubber there to make the flex; flex a little instead of slamming into the subframe and causing full load vibrations now I can drive it without even noticing.

I will have to make some permanent adjustments when I feel like it.
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Old 04-19-2012, 10:07 PM   #37
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SO installing this header, you lose the Cats?

and can you post picture of your flex pipe rubber fix?
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Old 04-19-2012, 10:10 PM   #38
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SO installing this header, you lose the Cats?

and can you post picture of your flex pipe rubber fix?
yes, the stock cats are attached to the stock header
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Old 04-19-2012, 10:19 PM   #39
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SO installing this header, you lose the Cats?

and can you post picture of your flex pipe rubber fix?
Ill post pictures when I do a Permanent Fix and I actually already have a sick idea that utilizes the factory flex pipe exhaust mounts.
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Old 04-20-2012, 01:21 AM   #40
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Why is everyone considering sticking a cat towards the end of the exhaust? Yes less efficient like it has been posted but why not just run without one instead of worrying about modifying an exhaust to put one in?

Is it emissions testing, visual inspection for you guys with states that require it?
Or the law saying you have to have one? No one is going to pull you over to check.
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