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O2 sensor; before or after the turbo?

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Old 01-29-2004, 01:35 PM
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Default O2 sensor; before or after the turbo?

hey i have got most of my stuff together for my turbo swap.... i see most cars have the o2 sensor after the turbo but does this matter at all? see im using a HF manifold and a adapter to the turbo.... the down pipe will have to be custom made do it would be good to know if i need to plug the hole on top or what... maybe i will run my exh. temp sensor from there? thanx
Old 01-29-2004, 01:36 PM
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Default Re: O2 sensor; before or after the turbo? (warchild69)

are you talking about egt? and o2
Old 01-29-2004, 01:37 PM
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Default Re: O2 sensor; before or after the turbo? (tgh99si)

well i already got the egt and i need to know if i should put my o2 sensor back in the exhaust manifold or after the turbo......
Old 01-29-2004, 01:38 PM
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Default Re: O2 sensor; before or after the turbo? (warchild69)

put egt in cylinder 3 on the manifold and put the o2 on the downpipe right after the turbo
Old 01-29-2004, 01:41 PM
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Default Re: O2 sensor; before or after the turbo? (tgh99si)

I ran the stock O2 in the top of my old HF manifold. worked fine. I would put the EGT there though and the O2 in the DP.
Old 01-29-2004, 01:52 PM
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Default Re: O2 sensor; before or after the turbo? (Bailhatch)

thanx guys i just wanted to get a few others advice on it before i screw it up!
Old 01-29-2004, 01:53 PM
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Default Re: O2 sensor; before or after the turbo? (warchild69)

no problem, another thing put the egt about 1-2 inches away from the head, and the o2 sensor im not sure but i have seen them about 3 inches away from the turbine outlet on the dp
Old 01-30-2004, 05:07 AM
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Default Re: O2 sensor; before or after the turbo? (tgh99si)

thanx guys i will start the project about mid feb. and will take pix
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