cupra de-cat pipe

[knoxville]

lookin for a de-cat pipe for my 01 leon cupra have a milltek cat back ss system on it also what happens to the lambda sensors on removing the cat does this throw up an engine management light any info greatly received

 

[Big_daddy]

You have to have it plugged in, but to prevent it coming up with a light on the dash, either have it spaced or a stage 2 remap to map it out. Theres a recent thread a day ago on this.
One of the new sponsor PiperRS have some good offers for decats.

 

[marky t]

my leon had a vault code come up on vag com about a faulty rear lamda sensor so i just unplugged it to see what happened and there does'nt seem to be any difference in its running and there is no engine management light on so i dont no what the score is with that

 

[Big_daddy]

the rear lambda sensor is mainly there for to check the cat effencity.
has your mpg suffered?
i have the same issue, (cant be asked to fix it), relpaced twice but keeps mucking up.

 

[jamandspoon81]

hi guys,i recently bought a decat pipe and after fitting it with no spacers to my lcr i had a e,m light come on,so i ignored it for a few days,until the coil packs started blowing,i changed them 3 times until i just put the cat back on,since then the coils have been fine,sounds strange but it happened.

 

[coullstar]

It looks like Ive got a decat and Im going to get rid of it. Get in touch if you want it.