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Old 08-08-2009, 01:16 AM   #1
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Default Divorced and transformable 3" Downpipe for Evo X

Divorced and transformable 3" Downpipe for Evo X: atpturbo.com

Thought this thing was pretty Bad *** lol
Didn't embed pics because there are many......
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Old 08-08-2009, 01:41 AM   #2
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I thought the point of having an external wastegate was so you could have huge through which to vent gas. Using an external gate on the same tiny hole as a internal gate wont make a difference me thinks.
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Old 08-08-2009, 01:44 AM   #3
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Well I though it was unique lol
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Old 08-08-2009, 01:51 AM   #4
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I thought it was a cool idea too when I saw it on ATP's site, but...

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Originally Posted by Saml01 View Post
I thought the point of having an external wastegate was so you could have huge through which to vent gas. Using an external gate on the same tiny hole as a internal gate wont make a difference me thinks.
Sam couldn't have said it better.
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Old 08-08-2009, 02:13 AM   #5
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As quoted before, Cjernigan didn't have any boost problems w/ his old setup, which was similar to this.
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Old 08-08-2009, 02:15 AM   #6
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As quoted never, In reality I've personally never had boost problems period, even with simple ol' flat flanged IWG turbines. So I should GTFO.
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Old 08-08-2009, 02:22 AM   #7
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On a tangent, always wondered why BEGi welds an external gate flange to the exhaust manifold that are of 2 dissimilar metals ? Why not just hold the external gate flange on by nuts and bolts, similar to how ATP has done to the separated pipe portion?

Will the bolts stretch, like the manifold to turbo junction bolts?

Last edited by kenzo42; 08-08-2009 at 03:04 AM.
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Old 08-08-2009, 03:06 AM   #8
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Why does NASCAR turn left?
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Old 08-08-2009, 06:38 AM   #9
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B/c their tracks are round. What's your point?
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Old 08-09-2009, 12:31 AM   #10
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Quote:
Originally Posted by kenzo42 View Post
On a tangent, always wondered why BEGi welds an external gate flange to the exhaust manifold that are of 2 dissimilar metals ? Why not just hold the external gate flange on by nuts and bolts, similar to how ATP has done to the separated pipe portion?

Will the bolts stretch, like the manifold to turbo junction bolts?
At one point they did just bolt them on. I have an old FM3 kit(aka old school begi turbos) and the external setup uses bolts.

As for the originally post. Back in the day I had my old DSM with external wastegate setup via the O2 housing. You are correct that it is not as nice as running off the manifold, but we would port the internal hole to the point you couldn't fit the internal flapper. Also by removing the whole internal flapper and arm it helps to open up the flow. Either way it is just a cheaper way to get better control over, over boosting without having to **** with the manifold.
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