Pics of Pre Cat removal

Round

I really want to remove my pre-cat but I'm scared... :cry:

I hear mixed feelings from different sites/garages/people.

I heard of engine management lights coming on to stay, failing MOT's, knackered lamba sensors etc etc.

What is the actual truth.

Expensive part to feck and replace...

vocky

the trick is to remove the lambda sensors without using any oil etc to loosen them

then reset the ecu by disconnecting the battery with a steady 30 mile drive to settle the ecu afterwards

kinglarry001

im having problems removing my lamba sensors. the seem stuck tight. it is the big nut i have to undo? they seem stuck tight. but as people say not to use oil/wd-40, i dont know what to do. any suggestions?

kinglarry001

also, what is the thing that is just below your pre cat? like a metal mesh thing?
mine is just infront of the cat. is it solid or flexible?

MikeS

flexi hose to stop you the exhaust banging around and prob stop your manifold from cracking

these engines are quite heavy and do move about a bit so i can imagine the hose is to relieve pressure on the downpipe, manifold and cat

kinglarry001

thats bit of a relief. cause mine was clearly loose in the middle, to allow for this movement. but gonna be getting a 200 cell sports cat now anyway, old one was looking bit knackered, and i think i sort of made a little crack in it...oioooppss. but now it means i've got the excuse t get the sports cat!!!

MikeS

they all go eventually

i suppose having knackered engine mounts will cause it to split a lot quicker

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