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Old 06-28-2013, 11:53 AM   #15
PfadtRacing
 
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These headers not only have great ground clearance...they were also designed around the new electronic steering system which has a different knuckle....this means zero clearance issues across the board for everyone! The HP numbers have been great too
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Old 06-28-2013, 11:57 AM   #16
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Seeing stock next to these are like
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Old 06-28-2013, 12:10 PM   #17
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I want and need a set...thanks
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Old 06-28-2013, 02:55 PM   #18
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I have Doug Thorley tri-ys 1 7/8" and they rub the steering shaft on hard turns. I love their sound too much to go with another set...but if your headers have a similar sound and great numbers for the L99, I might switch them out!
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Old 06-28-2013, 05:16 PM   #19
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Seeing stock next to these are like
No kidding. You think they might flow a little better?

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Old 06-28-2013, 05:23 PM   #20
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These headers not only have great ground clearance...they were also designed around the new electronic steering system which has a different knuckle....this means zero clearance issues across the board for everyone! The HP numbers have been great too
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No kidding. You think they might flow a little better?
Then where are the graphs???
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Old 06-28-2013, 05:56 PM   #21
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So will these bolt up to the stock cats?... I'm getting close to pulling the trigger on a set of SOLO hi-flow cats (which fit the stock manifold) + full catback with j-pipes and plan on doing headers next. I'd hate to spend the money and find out I'm gonna have to turn around and replace the cats again in a year.
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Old 06-28-2013, 06:03 PM   #22
nyrfan
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So will these bolt up to the stock cats?... I'm getting close to pulling the trigger on a set of SOLO hi-flow cats (which fit the stock manifold) + full catback with j-pipes and plan on doing headers next. I'd hate to spend the money and find out I'm gonna have to turn around and replace the cats again in a year.
No, these come with HF cats. So forget the solos.


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Old 06-28-2013, 07:55 PM   #23
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So will these bolt up to the stock cats?... I'm getting close to pulling the trigger on a set of SOLO hi-flow cats (which fit the stock manifold) + full catback with j-pipes and plan on doing headers next. I'd hate to spend the money and find out I'm gonna have to turn around and replace the cats again in a year.
You can not use stock cats with long tube headers. You will also not be able to turn around and use the Solos with long tubes later. It is a totally different set up. Hold out on the cats and get them with your headers.
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Old 06-28-2013, 08:16 PM   #24
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You can not use stock cats with long tube headers. You will also not be able to turn around and use the Solos with long tubes later. It is a totally different set up. Hold out on the cats and get them with your headers.
Exactly! I had Solos with my shorties and had to sell them when I went LT's. I just bought the cats that go with the LT's and it bolted right up to my catback!
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Old 08-12-2013, 06:44 PM   #25
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Another view of the Tri-Ys;

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Old 08-13-2013, 05:25 AM   #26
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Another view of the Tri-Ys;

Great photo. People don't usually think to get one from the backside.
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Old 08-13-2013, 01:53 PM   #27
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the exhaust on my car has a 2 1/2 inch connection to a 3 inch x pipe do i need a new x pipe with these as well I bought the Flow Master AMT CAT back system
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Old 08-13-2013, 05:23 PM   #28
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the exhaust on my car has a 2 1/2 inch connection to a 3 inch x pipe do i need a new x pipe with these as well I bought the Flow Master AMT CAT back system
No, it will bolt up to your cat back.
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