As breezapom said the cupra has a front mount compared with the 130 side mount, so the pipes will be different shape so physically won't fit. I know you can get uprated silicon piping for the 1.8t but don't think pipe kits for the 130 are widely available.
i had the
problem with this pipe blowing off on mine a couple of months ago, it's going to keep coming off until you replace it. I bet if you look at the pipe where its coming off you will see the lugs have been partially sheared off. A straight replacement from the dealer costs about £25, if you need the part number just take it off and read all the writing on it and somewhere it will have the part number, or alternatively just take the part to the dealer and i'm sure they will
help you find it.