2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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s5 turbo

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Old 08-06-03, 10:56 PM
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s5 turbo

does the s5 turbo have some kind of internal wastegate? im trying to put one on a 12a but there is a vacume thing that links to the turbo on the T2 and it seems like it would be a wastegate, if i have an external wastegate already can i remove this from the turbo? or is it something else.
Old 08-06-03, 11:42 PM
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yes is has an internal wastegate.

if you are planing to use an external one. I would take off the turbo back plate and weld the stock one shut. as well as leaving the vacum line off.
Old 08-07-03, 06:51 AM
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will the greddy profec b spec 2 work on the stock wastegate? and if i were to take it off would i just take off the plate and remove everything and then weld the little mechanism holes shut?
Old 08-07-03, 04:23 PM
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can anyone help me out here? please?
Old 08-08-03, 02:20 AM
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Originally posted by clarksonrx7
does the s5 turbo have some kind of internal wastegate?
Pratically all factory turbos have internal wastegates. Factory external wastegates are very rare.
will the greddy profec b spec 2 work on the stock wastegate?
It'll work on any wastegate.
i were to take it off would i just take off the plate and remove everything and then weld the little mechanism holes shut?
Just welding the flap closed would be easier.
Old 08-08-03, 02:27 AM
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Originally posted by clarksonrx7
will the greddy profec b spec 2 work on the stock wastegate? and if i were to take it off would i just take off the plate and remove everything and then weld the little mechanism holes shut?
It's easy... you just run the manifold signal line to the solenoid and the new signal line to the wastegate. It tricks the wastegate into thinking it's running stock boost when it's running whatever you've set into the controller.
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