No rear o2 Holes in Headers

[jjdelicious]

I have a 2015 Mustang GT. With Texas Speed Longtube headers that have a catted connection. I’ve noticed that there’s only o2 bungs before the cats themselves and not after.
Do i get holes threaded in? is this intentional? If i get a tune, will i have to get dummy connectors?
i’m all new to this.

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[sk47]

Hooker Headers 71014302-RHKR Hooker Clamp-On Oxygen Sensor Bungs | Summit Racing

Hello; You also can weld a bung onto pipe. Utube videos can be found.

 

[Wraith_S550]

all you have to do once you get rear o2 bungs installed is add a o2 sensor spacers to the rear sensors to get them up out of the exhaust stream and the you won't have a C.E.L. on. The rear o2's are just cat monitors they do not affect the tune/ performance of the of the engine on the Mustang.

 

[Ruiner46]

all you have to do once you get rear o2 bungs installed is add a o2 sensor spacers to the rear sensors to get them up out of the exhaust stream and the you won't have a C.E.L. on. The rear o2's are just cat monitors they do not affect the tune/ performance of the of the engine on the Mustang.

The rear O2 sensors contribute to some correction of the front O2 sensors and fuel trims. There is a system called FAOSC that should be disabled in the tune if you don't have the rear O2 sensors in the exhaust stream. Unfortunately, this is another item that most tuners won't touch anymore due to fear of the EPA.

 

[junits15]

This set of headers will not work if you have any kind of emissions testing. You need to have those downstream sensors installed and in the exhaust stream.

This set will only work in areas with no emissions testing or for racetrack only use.

 

[SheepDog]

@jjdelicious , The rear O2 sensor bungs should be in the "S" shaped connection pipes. If they are not, have Texas Speed send you the correct ones

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