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Old 01-03-2013, 10:52 AM   #11 (permalink)
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Default Re: VR4 needed for header test

GC Tech td04 front and rear manifolds I would assume
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Old 01-03-2013, 11:31 AM   #12 (permalink)
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Default Re: VR4 needed for header test

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Originally Posted by Jesters Deadd View Post
WHo's headers?
How much to leave em on?
he said he would give them at cost
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Old 01-03-2013, 02:49 PM   #13 (permalink)
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Default Re: VR4 needed for header test

Front only. The stock rears most time last and flow well. Tis the front that most wish to change out.
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Old 01-03-2013, 03:51 PM   #14 (permalink)
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Default Re: VR4 needed for header test

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Front only. The stock rears most time last and flow well. Tis the front that most wish to change out.
I don't understand that. Stock manifolds will allow big TD04 turbos to push 600hp. Stock TD04-9Bs can't keep up with a stock car at 15 psi. I doubt headers will change that at all. What I am saying is stock manifolds out flow the 9BS so headers won't give you much of a benefit on a stock car.
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Old 01-03-2013, 03:54 PM   #15 (permalink)
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Default Re: VR4 needed for header test

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Originally Posted by Jesters Deadd View Post
I don't understand that. Stock manifolds will allow big TD04 turbos to push 600hp. Stock TD04-9Bs can't keep up with a stock car at 15 psi. I doubt headers will change that at all. What I am saying is stock manifolds out flow the 9BS so headers won't give you much of a benefit on a stock car.
Thats why it needs to be dyno tested before and after to silence the nay sayers. Best way todo it, I think, is on a stock car. Either u r right or the builder is right until then its a guessing game.
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Old 01-03-2013, 05:18 PM   #16 (permalink)
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Default Re: VR4 needed for header test

it is a good idea. If the header proved to actually make back to back gains I for one would run one. Until then it seems like a waste of time to even install.
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Old 01-03-2013, 07:51 PM   #17 (permalink)
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Default Re: VR4 needed for header test

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Originally Posted by Jesters Deadd View Post
I don't understand that. Stock manifolds will allow big TD04 turbos to push 600hp. Stock TD04-9Bs can't keep up with a stock car at 15 psi. I doubt headers will change that at all. What I am saying is stock manifolds out flow the 9BS so headers won't give you much of a benefit on a stock car.

This is the same story you read at Evom forums in regards upgrading the stock cast manifold on stock turbo(way better design that ours ) vs 3 types of tubular headers and the results are great 27awhp at minimum and 57awhp with long tube NO TUNE added and not a single change in spool.
"Why upgrade if the stock one will get you 500awhp" they say... MAP showed up with 3 dyno sheets and shut some mouths out there.

So until I can test my manifolds in a car Dutch is right we would not know altho I do not have the minimum doubt that my headers will add hp to the graph

Last edited by GCtech Industries; 01-03-2013 at 11:18 PM.
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Old 01-03-2013, 10:59 PM   #18 (permalink)
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Default Re: VR4 needed for header test

I love my set of manifolds. Can't wait to bolt them up lol
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Old 01-04-2013, 09:38 AM   #19 (permalink)
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Default Re: VR4 needed for header test

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Originally Posted by GCtech Industries View Post
This is the same story you read at Evom forums in regards upgrading the stock cast manifold on stock turbo(way better design that ours ) vs 3 types of tubular headers and the results are great 27awhp at minimum and 57awhp with long tube NO TUNE added and not a single change in spool.
"Why upgrade if the stock one will get you 500awhp" they say... MAP showed up with 3 dyno sheets and shut some mouths out there.

So until I can test my manifolds in a car Dutch is right we would not know altho I do not have the minimum doubt that my headers will add hp to the graph
THat's fair. But why not do front and back then?
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Old 01-04-2013, 09:46 AM   #20 (permalink)
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Default Re: VR4 needed for header test

Don you can use mine while you get the work done that we discussed... I'm in no rush to get it back..
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