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STS with long tube headers?

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Old Dec 1, 2005 | 08:45 AM
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Default STS with long tube headers?

I am considering an STS system but I already have long tube headers and an off road y-pipe on the car, would they cause a problem with the STS system? Didnt know if the kit was designed specifically for a stock exhaust.

Thanks
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Old Dec 1, 2005 | 09:19 AM
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I would like to know as well. I would think the increased exhaust flow could only help the turbos.
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Old Dec 1, 2005 | 09:23 AM
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I know angie @ thunder runs long tubes(or some kind of header) on her car.
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Old Dec 1, 2005 | 09:31 AM
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These STS systems are amazing. They said there is really no difference between stock manifolds and headers with the STS turbo systems. These turbo systems will work great on stock or aftermarket headers. I have a set of shortys on my car with the STS and the system is amazing. Feels stock untill you nail the pedal and then it really starts to pull. I was amazed with this product. But yeah it will work just fine. They said they did not get really no more horsepower gains using headers over the stock manifolds. It would seem like you would improve and flow more air with headers. I'm sure you would but not that much extra horsepower. The STS kit will get a little tricky if you have aftermarket suspension parts on like welded subframes, controll arms, etc,etc. I needed a custom pipe made to clear my aftermarket parts. Because I still wanted to use the aftermarket subframes and controll arms
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Old Dec 1, 2005 | 09:37 AM
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personally id feel more safe knowing there were no cats after the manifolds/headers...that would be my only fear is if one of the cats fails that would go right through the turbine.
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Old Dec 2, 2005 | 01:11 PM
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Thats a very good point about the cat failure....
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Old Dec 2, 2005 | 03:45 PM
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And if you ever want to use a 2-Step you have to remove the Cats anyway.

The only catch to LT and ORY is that you have to have the exhaust pipe from the ORY to the turbo fabed... not impossible. Just not plug and play like the stock exhaust system to STS
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Old Dec 2, 2005 | 06:25 PM
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if heat retention is a concern then i would stik with the stock manifolds, they dissipate less heat. maybe a coated and wrapped long tube would wrk great with no cats.
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Old Dec 2, 2005 | 07:41 PM
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Much better air flow to the Turbo with the cats out. As for the long tubes I don't think it will really make a difference.
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Old Dec 2, 2005 | 08:13 PM
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I run mid-lengths... no issues here.. 600rwhp, 622 TQ at 7lbs. (Twin rear mount)
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Old Dec 3, 2005 | 05:29 AM
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Originally Posted by Jammer
I run mid-lengths... no issues here.. 600rwhp, 622 TQ at 7lbs. (Twin rear mount)
woah, what car?

and good point about the cat failing, never even thought about that.
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Old Feb 16, 2013 | 02:31 PM
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i know old, but theres been some updates on this issue. get rid of the LT headers run stock maifolds and run 2.5" catless ypipe. then wrap everythine form the turbo back to at least the ypipe if not to where the cats were. im unfortunatly stuck with some OBX LT headers, but at least they are on the smaller side of LT headers. they arevery close, but a mm or so small then say the big boy name brands. like the collector is 3" outside diameter, so it makes the inner diameter slightly smaller. im gonna to wrap all the way up as far as i can with past the collector to keep as much heat in. i have some stock manifolds but they are back in wisconsin in my storage lol but im in el paso tx lol. i know im slightly hamstinging myself for now, but i also plan on a custom turbo cam but tick so i think i might just stick with this setup to help with flow since the cam is speced at 226/235 with some healthy lift. so i may get away with this setup on LT headers. he speced it out with this headers in mind so im gonna test this out first.
but as many have said, if you got your manifold still, keep em on and get a 2.5" catless ypipe to help velocity and heat moving.
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Old Feb 16, 2013 | 06:20 PM
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Im running pace setter LTs on my rear mountrd setup with great results. I wraped mine and had yhem coated. The car made 875/860 on them so im pretty happy with it
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Old Feb 16, 2013 | 07:36 PM
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daaaaamn lol but that 383 with twins has somthing to do with that lol
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Old Feb 16, 2013 | 09:07 PM
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i read about a guy that went from wrapped long tubes to stock manifolds or vise versa i dont remember but he said it spooled better with the manifolds but it performed better up top with the headers because of the better flow. so i guess its really just a matter of what you would prefer
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Old Feb 16, 2013 | 09:17 PM
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And we just bumped a thread that hasnt been commnted on in 7 years...
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Old Mar 12, 2013 | 11:41 PM
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Originally Posted by k_cash1432
And we just bumped a thread that hasnt been commnted on in 7 years...
lol nothin wrong with that, just gave me some answers i was lookin for
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Old Mar 13, 2013 | 09:53 AM
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^^^ my thouhgts exactly.
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Old Mar 13, 2013 | 01:33 PM
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Nothing wrong to bump a old thread that can be updated with new and better info
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Old Aug 23, 2013 | 04:45 PM
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Ok, here is a brain teaser for you... I currently have BBK Longtubes, and the BBK Y pipe going into the factory SLP catback and have the SLP CME exhaust...

Now, I just purchased a STS Rear Mount Turbo Kit.

Educate me on what I need to do to

1. Keep my long tubes
2. Keep my CME
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