Martyn said:
how much to upgrade the turbo and will their be any gains?
i had mine about 3 years ago now and they was about £500 and gained approx 10-15 bhp with uprated acuator, keep an eye out on ebay, i got mine from there for £300 and it was a new product then!
also a larger intercooler works well, but the very first thing to do, and i see so many without this done still 'SILICONE BOOST PIPE' get them for about £100 or get a stainless one, the OE rubber one on full boost expands to about twice the size and as there now getting older they'll be weaker!