F355 Cat ECUs on decat

[Jonty355]

Hi guys,

Currenty having some work done on the 355, all oxygen sensors replaced etc. Also, the Cat ECUs have been buggered for a while and just been left unpluggeged. However this does mean the car doesn't run as smooth on the bottom end of the revs.

The car is decatted though, so does anyone know if replacing them is pointless on a decatted car, or whether it will still be worth doing?

Just concious of splashing out on new ones, but then having to unplug them anyway because the lack of cats may send the car in ti limp mode???

Cheers in advance

Jonty

[Cactussed]

2.7 or 5.2?

[Jonty355]

5.2

[Chris honeywell]

Don't know if this helps but i have mine plugged in AND i run de-cat pipes on a F355 5.2 no issues at all with CEL lights etc infact i was getting the occasional CEL light before i put the pipes on now 500 miles later not one issue.
What you find with the de-cat pipes though is the front 02 sensor is spaced out of the way of the gas flow so that the front and rears get different readings, this i think keeps the lights out

[Jonty355]

Cheers! Thats great, Thank you.