Very low mileage

[Mackie]

Hi all
2002 mk3 mileage 37000
What do I do
Leave it or take the pre cats out

[Joesson]

Hi Mackie
I guess that you have read up on here about the damage that the break down of the precats has done to some engines on our cars and hence your question.
You may also be aware that the root cause of the problem is the design of the original oil ways in the pistons and this is exacerbated by irregular oil changes.
As you are at best the second owner the service frequency and regularity of the oil changes may not be known to you.
My suggestion would be, firstly to check the condition of your precats by removing the top two sensors in the exhaust manifold.
I did this and mine were fine but I still went ahead and gutted the OE manifold.
If showing signs of breakdown then I would definitely gut the OE or, as many on here have done, replace with an aftermarket manifold.
My understanding is that the single, most important maintenance of our engines is a regular change of the specified oil and filter.
At least once per year, I cannot recall the mileage as I never reach those figures but nevertheless change oil and filter annually at around 3K.

[Zxrob]

Mine is a 2004 with 45k

Mine came out with a month

Rob

[Gaz mr-s]

If you decide to go aftermarket manifold I know of a heat-wrapped Toyo manifold that should be for sale.  It's done very few miles since the wrap was fitted, & was removed from the car & car sold with the o/e manifold.

According to the owner of Zero exhausts an o/e manifold with cats removed should be inefficient.

[Call the midlife!]

You see I read things in the order they appear so I've said all these things on your other post!😆
By the way, if you do go ahead and smash the precats out be sure to take the appropriate H&S precautions. 
Also some people claim to have got a few quid for the innards from the scrapman...

[Ardent]

@Mackie

If you are not burning oil now, the likelihood is, it wont with regular oil changes.
As per @Joesson, pop the sensors out and have a look. If they are fine, I would save yourself the bother.

Bear in mind the sensors are quite fickle, and may throw a code afterwards because you dared to disturb them.