Carby and EFI similar exhaust? GQ LWB

[no eye deer]

Hey fellas,
any one know if the exhaust is similar on a carby TB42 to a TB42E? I know the cat would be different. But wondering if the rest of the system is the same.

Thanks
Mark

[Bloodyaussie]

The efi has a thread for the oxygen sensor but can be blocked off for the carb model... if you are fitting a carb model exhaust to efi you need to drill and put a thread in for the sensor.

[Winnie]

Jonathan mine never had a sensor in it?

Other than the cat and what Bloodyaussie has said, they should be the same.

[no eye deer]

Mainly after info on the cat back area. I want to get rid of that 500 pound muffler!! HaHa

[threedogs]

Cat back you should be fine

[Bloodyaussie]

Yeah thanks.... they are the same.

[Drewboyaus]

Jonathan mine never had a sensor in it? Other than the cat and what Bloodyaussie has said, they should be the same.

Maybe why it got 30L/100km on the highway....
LMAO

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[GQ TANK]

That would do it - no o2 sensor it will drink a lot more go go

[Winnie]

Maybe why it got 30L/100km on the highway....
LMAO

Sent from my iPhone using Forum Runner

Could be! It was fine on gas though, does gas use it?

[the evil twin]

Could be! It was fine on gas though, does gas use it?

AFAIK if you have old school vapour LPG system then it won't use an O2 sensor.

If you have no O2 sensor when on Petrol then the ECU will stay in open loop because it has no sensor to try and maintain the correct fueling ratio.
It will def increase the fuel useage but should also illuminate the CEL

[no eye deer]

Thanks fellas!