how do you know it has gone , I have seen some on Ebay but check yours some have three little pipes coming off some have 2 check for any leaks in the pipes first.
too late just fitted it
car now driving great
all thanks to the sticky thread in this section
saved me a fortune as it felt like fuel starvation or turbo
looks to be a common issue
mine wouldn't go over 70 and hated hills
felt like fuel starvation
read the sticky
pulled vacuum pipe off turbo and tried it
no low down power but turbo boosts and away you go