Hood exit o2 sensors

Wavvyjd

New Member
Aug 22, 2023
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First time putting a single turbo in a car and Im finishing up my build but ive ran into a problem/ need some advice on what i need to do for this car to run properly, i dont have a dont pipe that can fit up to my stock exhaust so i plan to run a hood dump for now, how should i have my o2 sensors setup, i have two bungs in the manifold and one hood dump pipe, am i able to run single bank fueling with this?, and im running a t4 divided twin scroll turbo if that makes any difference, any advice is appreciated thank you!!
 

Jern54

Sergeant
Oct 18, 2019
287
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166
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Netherlands
Ride
E91 N54 335i
My hood exit pipe has 2 O2 sensor bungs.
That in combination with single bank fueling it works fine.
 

daddyw00d

New Member
Dec 21, 2022
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i only have 1 oxygen sensor in the hood dump with single bank fueling. codes for after cat sensors turned off.
 

N54_Sauce

New Member
Dec 11, 2023
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I know this is an old thread but I’m about to run a hood exit exhaust on a single turbo n54. Will this throw off the tune? I have a custom tune and the up pipe has only one o2 bung. Before I go and put it on I want to make sure I do it the right way.

Thanks
 

N54_Sauce

New Member
Dec 11, 2023
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So I should get another bung welded on the hood exit. How far apart should they be from each other?