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i used to have a t3/t4 .and have the profec b greddy boost controller, so the BC selenoid has 2 exits one goes to the WG and the other to a turbo compressor housing or pressure source, so the t3/t4 did not have a turbo compressor source so i use a pressure source in the intake next to the throttle body, but i change the turbo to a t3 super 60 and it does have a compressor housing, what do i do? can i just use a T and take reference from the compressor housing and the pressure source? or eliminate either the housing or the source ?

 
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use the turbo, not the IM. Either get a I type of fitting, like the T, but with no 3rd hole. Or get a new line, which I recommend. I would use the out to the wastegate, and in from the turbo. Anybody else have feedback on this? I didnt think you were supposed to use the IM.

 
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Taking the signal from either source is ok but I personally prefer IM pressure. The problem with taking a signal from the compressor outlet is that this signal won't take into account changes in charge air pressure due to the IC and other factors. If you want to meter the pressure of the air going into your engine, the best place would be right before the air actually goes into your engine (i.e. intake manifold).

 
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My current turbo has a hole tapped in the compressor housing for a pressure signal but I just bought a plug, put some teflon on it, and screwed it in.

 
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That´s whatd i tought the IM has th real pressure that goes into the engine, ill keep using that and eliminate the compressr housing !! thankss