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Old 02-28-2014, 08:45 PM   #1
lacole725
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08-11 Exhaust Manifold Collector Size

Is the collector size 2.5" in diameter like FSWerks exhaust pipe? Thinking about getting an exhaust shop to just run straight pipe back from the manifold, as long as they are cheaper than FSWerks. Really missing not having exhaust. I just want the same size piping as their system so I can put a stealth muffler in if I move back to Maryland after school or to a state that is strict about noise.


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Old 02-28-2014, 08:54 PM   #2
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So you want a flex? You can't use a straight pipe= it needs to be a flex whether the muffler shop makes one up or you buy one. The motor rocks in fwd cars, thats why theres flex pipes, from the manifold to the head pipe. You'd have to weld a reducer to the aftermarket head pipe, as the exhaust coming out of the manifold isn't 2.5''. Sounds like a trip to your local muffler shop is in order, saturday morning.
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Old 02-28-2014, 09:00 PM   #3
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Quote:
Originally Posted by felixthecat View Post
So you want a flex? You can't use a straight pipe= it needs to be a flex whether the muffler shop makes one up or you buy one. The motor rocks in fwd cars, thats why theres flex pipes, from the manifold to the head pipe. You'd have to weld a reducer to the aftermarket head pipe, as the exhaust coming out of the manifold isn't 2.5''. Sounds like a trip to your local muffler shop is in order, saturday morning.
The manifold has a flex pipe built into it, doesn't it? I guess I should have been a little clearer, I meant where the manifold bolts to the exhaust. It has been a little while since I took off my header (I got very familiar with the exhaust with that piece of hellspawn), so I may have forgotten. I'm pretty much trying to make an "El Cheapo" version of FSWerks and it doesn't come with a flex pipe. These 240SX drivers that I hang out with have rubbed off on me with the budget modifying.
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Old 02-28-2014, 09:11 PM   #4
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It will be loud as hell but yes you can run a 2.5" pipe from the flex back but it will definitely will stepped down to the stock 2" pipe.
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Old 02-28-2014, 09:15 PM   #5
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Quote:
Originally Posted by SlickWilly View Post
It will be loud as hell but yes you can run a 2.5" pipe from the flex back but it will definitely will stepped down to the stock 2" pipe.
I'm aware of how it will sound, I had the race exhaust with race header. Sounds great on a one hour commute. I'd rather not pay $400 for another FSWerks system. I will go this route if, and only if, it will be cheaper than FSWerks. By cheaper, I mean by at least $100. I saw an advertisement for a shop saying they will do dual exhaust on trucks for $250, so a single straight run should be a little cheaper than that.
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Old 02-28-2014, 09:16 PM   #6
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I wouldnt do it. Just spend the 450 and get the fswerks stealth exhaust. I have an fswerks race header, and the flex pipe that goes with it. I then have the race pipe section and after that its pretty much straight pipe from a muffler shop. Needless to say its loud as hell and I'm tired of it. I'm ordering the stealth exhaust in a few weeks. Just my 2 cents worth.
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Old 02-28-2014, 09:17 PM   #7
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I know my shop will do it for 80$ so I would expect around there.
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Old 02-28-2014, 09:17 PM   #8
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Quote:
Originally Posted by 2010SVT View Post
I wouldnt do it. Just spend the 450 and get the fswerks stealth exhaust. I have an fswerks race header, and the flex pipe that goes with it. I then have the race pipe section and after that its pretty much straight pipe from a muffler shop. Needless to say its loud as hell and I'm tired of it. I'm ordering the stealth exhaust in a few weeks. Just my 2 cents worth.
I've already had the race header with race exhaust. This should only be slightly louder than the FSWerks race exhaust, since I will be keeping the mani-cat.
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Old 02-28-2014, 09:19 PM   #9
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If you already have their race exhaust you are aware you can just order the muffler that makes it the stealth exhaust for like 80-90 bucks
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Old 02-28-2014, 09:25 PM   #10
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Quote:
Originally Posted by 2010SVT View Post
If you already have their race exhaust you are aware you can just order the muffler that makes it the stealth exhaust for like 80-90 bucks
I got an inspection ticket in MD when I had my full system on, a state trooper said it was too loud. I went back to stock and sold my exhaust to my friend for a deal since he let me use his lift and helped me work on my car. I sold my header to a member on this forum.

I live in Alabama right now, so I won't be bothered with the volume of the system. Like I said in my original post, if I move back to MD once I graduate from college or move to a state with laws similar to MD, I will buy a stealth muffler. Hence trying to find the correct size diameter of pipe to use.
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